Database Info

2G/3G Toggle?

Any idea how to enable/unhide this feature under wireless networks? Switching to 2G only nearly doubles my battery life on my Nexus

I've just been accessing the band selection menu and selecting gsm bands only. The menu is *#*#2263#*#*. This little "fix" doesn't hold after a reboot, fyi.
I also use the SMODA widget to shut off the data connection whenever I don't need it.
It sucks that mobile data is always on by default, with no stock option to shut it off, and that you can't select to only use 2g right out of the box.

I've seen some widgets that will turn 3G off/on... I wonder if those work on the captivate. I'll give it a try today.

mesasone said:
I've seen some widgets that will turn 3G off/on... I wonder if those work on the captivate. I'll give it a try today.
Click to expand...
Click to collapse
I think you should be able to force it by going to *#*#4636*#*# and selecting GSM only, but that's such a hassle

http://www.appbrain.com/app/com.google.code.apndroid
See if this helps do what you want.

Try quick settings from the market and toggle the APN control on and off. Appears to work....
Sent from my SAMSUNG-SGH-I897 using XDA App

MendedEagle said:
Try quick settings from the market and toggle the APN control on and off. Appears to work....
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
I'm not looking to completely disable data - I just want to be able to disable 3G when I don't need it (and revert to EDGE data)

mesasone said:
I've seen some widgets that will turn 3G off/on... I wonder if those work on the captivate. I'll give it a try today.
Click to expand...
Click to collapse
The widget I have - which comes with Weather and Toggle Widget - does not work. It just brings up the wireless connections menu, but of course you can't turn it off from there.

I'm using smart bar, and it has a 3g-2g switch, but it isn't working. Since this functionality isn't working on my captivate, but worked on my other phones, I'd say it's been intentionally pushed out. If a hack can fix this, I'd love to learn about it.
Sent from my SAMSUNG-SGH-I897 using XDA App

I am also interested in this. I work in.a area that switches from edge to 3g a lot and when i had a iphone i increased my battery a lot by setting it strictly to edge at work.
Sent from my SAMSUNG-SGH-I897 using XDA App

After all the digging and searching around, I found two apps that work perfectly on Samsung Captivate for toggling mobile data (3G)
- Juicedefender (it has a widget you can use to toggle 3G quickly)
- SMODA Widget (It doesnt have too many 5 star ratings but works fine on my samsung captivate).
My phone is rooted but I believe it is not a requirement of either of the above apps. Hope this info is useful for other captivate owners.
Most of the other APN / 3G toggle apps on the market try to put a suffix on the APN names in settings. On the samsung captivate this works only with a restart/reboot. Meaning if you disable 3G using the app it would put a suffix like 'disabled' or something to the APN name. But your phone still has the 3G connection using the original APN settings. Only after you restart the phone does it see the 'disabled' APN name and is not able to use and hence no 3G. Vice versa when you want to enable 3G back - needs restart.
I dont know what process the above 2 apps use but they work instantly on my samsung captivate. No need to restart or click a bunch of other settings. They work perfectly and as simple as it should be.

bravisha said:
After all the digging and searching around, I found two apps that work perfectly on Samsung Captivate for toggling mobile data (3G)
- Juicedefender (it has a widget you can use to toggle 3G quickly)
- SMODA Widget (It doesnt have too many 5 star ratings but works fine on my samsung captivate).
My phone is rooted but I believe it is not a requirement of either of the above apps. Hope this info is useful for other captivate owners.
Most of the other APN / 3G toggle apps on the market try to put a suffix on the APN names in settings. On the samsung captivate this works only with a restart/reboot. Meaning if you disable 3G using the app it would put a suffix like 'disabled' or something to the APN name. But your phone still has the 3G connection using the original APN settings. Only after you restart the phone does it see the 'disabled' APN name and is not able to use and hence no 3G. Vice versa when you want to enable 3G back - needs restart.
I dont know what process the above 2 apps use but they work instantly on my samsung captivate. No need to restart or click a bunch of other settings. They work perfectly and as simple as it should be.
Click to expand...
Click to collapse
i heard juice defender works well

Where are you seeing the option to switch from 3G to EDGE? I just installed Juice defender but can't find the option. The mobile data connection widget just shuts off my data entirely.

Sorta on topic but when I try to install juice defender it is never able to install the aosp helper. Does it work for you guys?
Sent from my SAMSUNG-SGH-I897 using XDA App

idkmybffzeeshan said:
I'm using smart bar, and it has a 3g-2g switch, but it isn't working. Since this functionality isn't working on my captivate, but worked on my other phones, I'd say it's been intentionally pushed out. If a hack can fix this, I'd love to learn about it.
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
Yea, I was hoping someone maybe knew which file you had to edit to reenable that option in the network settings page
bravisha said:
After all the digging and searching around, I found two apps that work perfectly on Samsung Captivate for toggling mobile data (3G)
- Juicedefender (it has a widget you can use to toggle 3G quickly)
- SMODA Widget (It doesnt have too many 5 star ratings but works fine on my samsung captivate).
My phone is rooted but I believe it is not a requirement of either of the above apps. Hope this info is useful for other captivate owners.
Most of the other APN / 3G toggle apps on the market try to put a suffix on the APN names in settings. On the samsung captivate this works only with a restart/reboot. Meaning if you disable 3G using the app it would put a suffix like 'disabled' or something to the APN name. But your phone still has the 3G connection using the original APN settings. Only after you restart the phone does it see the 'disabled' APN name and is not able to use and hence no 3G. Vice versa when you want to enable 3G back - needs restart.
I dont know what process the above 2 apps use but they work instantly on my samsung captivate. No need to restart or click a bunch of other settings. They work perfectly and as simple as it should be.
Click to expand...
Click to collapse
I already have Juice Defender I know I can disable data completely, but I'm looking for something that can disable 3G while keeping EDGE alive
Main Target said:
Sorta on topic but when I try to install juice defender it is never able to install the aosp helper. Does it work for you guys?
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
It says install completed, but in the logs, it says there was an error

It would be nice to disable 3g while at home or something , where the reception is a bit sketchy, but i could at least still use it for voice and texting , and use wifi for the internet and app stuff. Could help conserve battery life as well

I tried smoda and can confirm that it doesn't work for me. It disabled data completely as I cannot access the web.when I activated the widget. It would be nice if we could set this phone to 2g and if data speeds were above a certain threshold for a certain amount of time then we could have it switch to 3g.
Sent from my SAMSUNG-SGH-I897 using XDA App

Yeah, I'd really just like to force the phone into EDGE mode when I'm not using it - updating weather and fetching e-mails are really not that data intensive and don't need the speed from the 3G connection. I'd like to have a widget that will turn the 3G back on when I'm on breaks or whatever and want to surf the web, watch a video on YouTube, whatever. I believe you can do this in the service menus, so you would think there would be a way to accomplish it with a widget - even if it were Galaxy S specific.
I'd pitch in 5 bucks towards a bounty towards such a widget if somebody could create one.
Juice defender does have the option to run the 3G radio on 15/1 cycles (off for 15 minutes, on for one) but I'm not sure how/if my apps that would use background data would sync up with that.

i9000 vs 1897 band settings?
Now that I've moved to the JH2 firmware I'm back to some of the AT&T crap, like hiding the band selection setting.
I'm thinking that the differences are in the Settings.apk.
Others have said that since it's a system app and signed, you can't just install it. So I'm wondering if it would be possible to pull the Settings.apk from the i9000 rom and stuff it using the update.zip method.
May have to do a backup and give it a shot.
Once that setting is available, you can use 2G 3G switcher from Market to bring up the UI and toggle between EDGE and HSDPA.
By keeping it on EDGE, my battery lasts alot longer...

If we could manage to enable it juice defender would switch back and forth automatically based on download speed and/or the screen being on/off, which be ideal.
Sent from my SAMSUNG-SGH-I897 using XDA App

How to disable/enable 3g on the Captivate!

Download the application SamServMode, this is just an application to quickly open the service menu. Press 1, press 8, press 4. GSM is EDGE, WCDMA is 3g!

Funny, I wish, there was just an icon or a widget that would let me do it.. hell the iPhone lets you do it pretty easy like with just a few steps..

I use ''gt-widget data'' to shut off 3g data,i can still get calls,but of course no data,which realy helps to save if your on the 200mb plan,although sometimes the widget disapears you can just long press the screen and select android widgets to get it back

yea. but i rather just have Edge sometimes, i dont use much data, and i do it just to save battery..
on another note, wonder why I can't get an extended battery for my Captivate.. i dont care if it's a little thicker, but a bnice big battery would be nice.

well,i dont see the 3g symbol activated when using that widget,i hoping im using edge,i need to see if i get better batt life,i only been using it 2 days

I use quick settings free apparently in market. Can't choose edge only. Just on or off 3g.

APNdroid works well too. did a nice job
went out of country and didn't want to use ANY data (even with world plan, roaming charges are outrageous).

i installed apndroid to on/off 3g. it didn't work well. i guess i didn't restart.
i restarted the phone after uninstalling apndroid.
now i don't get the 3g icon on top. and it doesn't work too. any way to reactivate it?

reventon1500 said:
i installed apndroid to on/off 3g. it didn't work well. i guess i didn't restart.
i restarted the phone after uninstalling apndroid.
now i don't get the 3g icon on top. and it doesn't work too. any way to reactivate it?
Click to expand...
Click to collapse
Looks like your APN info is lost, atleast looks so. Its is best to always backup APNs using "APN Backup Restore" app before doing this.
Also, next time on, you could try using SAMSERVMODE to disable enable 2G/3G data mode. That would be most non-intrusive way, since the changes would be persistent only till phone reboot. On reboot, they would be restored back.

myrddin201 said:
APNdroid works well too. did a nice job
went out of country and didn't want to use ANY data (even with world plan, roaming charges are outrageous).
Click to expand...
Click to collapse
APN droid, to the best of my knowledge, deletes APN settings when disabling data. It restores them when restoring connection. Kind of dangerous way esp. considering that people do not always remember to restore data connection before deleting the app.
Please correct me if my understand of APN droid is wrong.
You could simple disable "data" in network settings.
This is would be advisable compared to using apps when settings/options are already present:
Settings --> Wireless and Network --> Mobile Networks --> Use Packet Data - ON or OFF.
---------------- Edit 1 ----------------
If you are on AT&T network in US, you could:
1. Ask anyone (could be on this forum too) to backup their AT&T APN settings using the "APN Backup Restore" app,
2. Copy the same to ur internal sd card,
3. Install the program on ur phone, and
4. Restore them on ur phone.
I could do the same, but I use a custom ROM and have some hundreds of APN entries. Stock AT&T ROMs have like 69-71 entries.
---------------- Edit 2 ----------------
I have attached the APNs I had backed up 22nd August 2010 when on 2.1. Attaching the same.
1. Create a folder called "ApnBackupRestore" on sdcard.
2. Extract and copy the XML from the attached file into this folder.
3. Install APN Backup and Restore app, and restore the data from this.
Hope this helps...

johnny0914 said:
I use quick settings free apparently in market. Can't choose edge only. Just on or off 3g.
Click to expand...
Click to collapse
Use SAMSERVMODE from market to turn on EDGE only or 3G only. This app does that, though the data is lost on restart and would need to turn on EDGE again after every restart.

I've been using APNdroid for quite a while now, and it works perfectly. It also comes with a widget which makes turning data on/off really easy.

i installed juice defender/ ultimate juice. it has a widget that turns off 3G..try it.
Sent from my SAMSUNG-SGH-I897 using XDA App

If you are using the newer Perception ROM. It can easily be changed by going to:
Settings > wireless and network > mobile networks > network mode
then select one of 3 choices (auto, GSM, WCDMA)
There's no need to install widgets or add-ons.

this is great, but it's a pain to go thu all thoes menus. thats why i hated the iphone soo much, going thue all these menus takes more time..
just want an on/off switch,.. would be nice if they could add it to the shade next to the wifi icon..
or when wifi is on, data turns off or goes to EDGE.

app: Switch Network Type works as a fast shortcut for me. Got it from the market.

I use switchpro widget. It has a toggle for pretty much anything you need to turn on/off. Its a paid app but its cheap and it really consolidates all of your toggle needs
Sent from my SAMSUNG-SGH-I897 using XDA App

SMODA widget ..... downloaded from Market. On or Off. Very Simple

eatonjb said:
yea. but i rather just have Edge sometimes, i dont use much data, and i do it just to save battery..
on another note, wonder why I can't get an extended battery for my Captivate.. i dont care if it's a little thicker, but a bnice big battery would be nice.
Click to expand...
Click to collapse
SeidioOnline has an extended life battery available as of Nov. 2010

Widgetsoid. 'Nuff said.

Skyrocket: no free internet access on WIFI??

(sorry I posted it in the wrong place so now re-posting it here)
Hi -
I just got this white Skyrocket phone with 200MB data plan.
I heard that when connected to 4G, the phone uses data allowance from the data package, whereas if connected to WIFI (like at home), the data usage doesn't come off my AT&T data allowance.
So I want to disconnect from 4G and connect to my WIFI when I am at home.
At the store, the just told me to make sure that WIFI is showing as on on the top bar (or when you swipe that bar down). They said if WIFI is showing on, it means that the phone is using WIFI connection.
However, I see that at the same time when WIFI is showing on, the "4G" icon is also showing on and looking active! So- they are both looking active! That's why I wonder which connection is my Skyrocket actually using?
It looks like the data I use on WIFI also comes out of my data plan because the data packet is on.
So I had an idea, went to settings-wireless-mobile networks and unchecked "Use Data Packet".
When the above was unchecked, 4G icon disappeared and I could see only WIFI icon on the top bar, which would be good - however, the problem is that now I cannot connect to internet. (I turned the phone on and off- no change)
Does it mean that there is no way on Skyrocket to bypass AT&T data allowance and whether I use 4G or my own WIFI, there is no free internet access on this phone?
Or is there something else I can do to make sure I am connected just to my WIFI and data is free?
I would appreciate your help.
Thank you

It just shows both icon to double check get speedtest and do one. You can see in results if you get wifi or 4g LTE.
justcalled said:
(sorry I posted it in the wrong place so now re-posting it here)
Hi -
I just got this white Skyrocket phone with 200MB data plan.
I heard that when connected to 4G, the phone uses data allowance from the data package, whereas if connected to WIFI (like at home), the data usage doesn't come off my AT&T data allowance.
So I want to disconnect from 4G and connect to my WIFI when I am at home.
At the store, the just told me to make sure that WIFI is showing as on on the top bar (or when you swipe that bar down). They said if WIFI is showing on, it means that the phone is using WIFI connection.
However, I see that at the same time when WIFI is showing on, the "4G" icon is also showing on and looking active! So- they are both looking active! That's why I wonder which connection is my Skyrocket actually using?
It looks like the data I use on WIFI also comes out of my data plan because the data packet is on.
So I had an idea, went to settings-wireless-mobile networks and unchecked "Use Data Packet".
When the above was unchecked, 4G icon disappeared and I could see only WIFI icon on the top bar, which would be good - however, the problem is that now I cannot connect to internet. (I turned the phone on and off- no change)
Does it mean that there is no way on Skyrocket to bypass AT&T data allowance and whether I use 4G or my own WIFI, there is no free internet access on this phone?
Or is there something else I can do to make sure I am connected just to my WIFI and data is free?
I would appreciate your help.
Thank you
Click to expand...
Click to collapse

They both should not show up at once unless something that needs access to att data like voicemail is checking for messages. Sounds more like either you are not connecting to your wireless router correctly or the wifi antenna is messed up on your phone.

Well sometimes for me it shows both icons in status bar. All i do is turn off wifi and turn back and the 4G LTE icon disappears.
draztikrhymez said:
They both should not show up at once unless something that needs access to att data like voicemail is checking for messages. Sounds more like either you are not connecting to your wireless router correctly or the wifi antenna is messed up on your phone.
Click to expand...
Click to collapse

appdroid said:
Well sometimes for me it shows both icons in status bar. All i do is turn off wifi and turn back and the 4G LTE icon disappears.
Click to expand...
Click to collapse
Yea same for me but that means something is not allowing the phone to connect to wifi hence having to turn the wifi radio off n on.
Normally it shouldn't do that. Plus if op restarted the phone entirely and still no connection something is just not establishing the connection correctly

Well not exactly because i did speed test and i got my connection as wireless connection so for me it was fine with both icon.
draztikrhymez said:
Yea same for me but that means something is not allowing the phone to connect to wifi hence having to turn the wifi radio off n on.
Normally it shouldn't do that. Plus if op restarted the phone entirely and still no connection something is just not establishing the connection correctly
Click to expand...
Click to collapse

Some functions require the data connection (mms, some syncing etc) and will trigger your data connection even when on wifi
If truly concerned use tasker or juice defender to disable cell data while wifi is on. Or manually turn it off
Or as someone else mentioned...you wifi is not maintaining connection
Sent from my SAMSUNG-SGH-I727 using XDA App

Not sure if this will help but there are many apps in the market to help with connection issues. I have two widgets that tells me which one im using and how strong they are just do a search for mobile traffic or cell /wifi. Hope that helps.
Sent from my SAMSUNG-SGH-I727 using xda premium

I think a lot of people are ignoring the op said no data is working at all when trying wifi.
Yes both icons will show sometimes because like mentioned mms, voicemail, etc requires it.
If the phone has no data period even after reboots then wifi is not connecting

Download "My data manager" from the market. It will show you your data useage, both wifi and data. Use that and check to see if you really are using your wifi or if its still using data.
Sent from my SAMSUNG-SGH-I727 using XDA App

Thank you for all your replies, each one taught me something about this new phone and I downloaded a few of the apps that you mentioned.
So all day I was being very careful about the internet, tracking my 4G/WiFi usage all day and then in the evening my kid pressed on a game icon and some kind of car game downloaded =adding over 70MB to my data transfer right away!! (and my monthly budget is 200MB)
It took a couple of seconds - he actually just pressed on the icon and then pressed home when he saw a car because he decided he doesn't want to play it. But it downloaded anyway! I am so mad!
I think it is unethical and very sneaky of AT&T to place all those unnecessary apps on the phone - especially if they turn out to be so costly.
So the only way to delete all those stupid apps is to root the phone? I am not a programmer and I am so afraid that I am going to mess it up

Don't need to root in order to uninstall apps just go to setting>application>manage application>Downloaded apps> and uninstall them. This is all the bloatware that you don't need so go through carefully and uninstall what you don't need. It will help you increase battery life.
justcalled said:
Thank you for all your replies, each one taught me something about this new phone and I downloaded a few of the apps that you mentioned.
So all day I was being very careful about the internet, tracking my 4G/WiFi usage all day and then in the evening my kid pressed on a game icon and some kind of car game downloaded =adding over 70MB to my data transfer right away!! (and my monthly budget is 200MB)
It took a couple of seconds - he actually just pressed on the icon and then pressed home when he saw a car because he decided he doesn't want to play it. But it downloaded anyway! I am so mad!
I think it is unethical and very sneaky of AT&T to place all those unnecessary apps on the phone - especially if they turn out to be so costly.
So the only way to delete all those stupid apps is to root the phone? I am not a programmer and I am so afraid that I am going to mess it up
Click to expand...
Click to collapse

Yes, I noticed that I can remove what I have installed. However, I wanted to get rid of pre-installed apps and their icons. I have not found a way to remove those.

Yes root and Rom toolbox app will help you with that.
justcalled said:
Yes, I noticed that I can remove what I have installed. However, I wanted to get rid of pre-installed apps and their icons. I have not found a way to remove those.
Click to expand...
Click to collapse

And if you call Att and tell them that it wasn't authorized they'll credit your account
Sent from my SAMSUNG-SGH-I727 using xda premium

Your wifi is turned on but you aren't connected to your Hoke network...go to settings>wireless and networks>wifi settings>then pick whichever network is yours and put in a password if it requires one
Sent from my SAMSUNG-SGH-I727 using xda premium

nthknd ,
I was hoping for that, but when I called AT&T, they didn't want to credit my account, just the opposite, they made me up my data plan to 2G. They said in the beginning people tend to use data more as they explore the new phone - in a few months, once I figure out my monthly usage, I can change my plan and go back to 200MB or whatever.
They also tried to fix my issues with internet (when only WiFi was showing -no 4G- the phone would not connect to internet). So they fixed it and now I have internet access when only WiFi is showing on the top bar.
On the other hand, now 4G completely disappeared! I haven't seen it all day..
Either AT&T is having technical difficulties or I got disconnected from 4G!

Sorry my advise didn't work but they should credit you since your phone malfunction,guess it depends on who you get guess it's a crap shoot.
Sent from my SAMSUNG-SGH-I727 using xda premium

appdroid said:
Well sometimes for me it shows both icons in status bar. All i do is turn off wifi and turn back and the 4G LTE icon disappears.
Click to expand...
Click to collapse
+1
Sent from my SAMSUNG-SGH-I727

They can't make you!
justcalled said:
nthknd ,
I was hoping for that, but when I called AT&T, they didn't want to credit my account, just the opposite, they made me up my data plan to 2G. They said in the beginning people tend to use data more as they explore the new phone - in a few months, once I figure out my monthly usage, I can change my plan and go back to 200MB or whatever.
They also tried to fix my issues with internet (when only WiFi was showing -no 4G- the phone would not connect to internet). So they fixed it and now I have internet access when only WiFi is showing on the top bar.
On the other hand, now 4G completely disappeared! I haven't seen it all day..
Either AT&T is having technical difficulties or I got disconnected from 4G!
Click to expand...
Click to collapse
They can't make you upgrade your data. The guy you talked to is just trying to rip you off so he gets commission for upgrading you to a "better" data plan. It's your account and you can pick what you want for it. If you want 200 MB then call and switch it back and say the last rep said you had to and made you do it.

Slow Wifi download

Hi, when I download something with my PC/Nexus 5 I usually get download speeds of about 11mbits, but when I try to download files from the Play Store/the Browser on my OPO I have download speeds of ~2mbits... If I download for example 4 files at the same time with the browser it goes to 8mbit... It cant be the fault of the download server, because it gives me full download speed on my other devices...
Anyone who has encountered the same problems/who knows a fix?
Thanks, Tom.

same... Speed test on my one is just slow... I just got it today compared to other wifi or just data transfer seems slow

Change the TCP Congestion Algorithm on your phone, search on how to do it. My wifi speeds are perfectly fine, getting 80Mb/s+ on my wireless n router.

thought it was just me...

I had the same issue. You have to go to settings, WiFi and then click on advanced WiFi and uncheck WiFi Optimization.

Turned WiFi optimization off and back in business.
Now to figure out proper network settings. I find the phone not on 4g when it should be

Gordie88 said:
Turned WiFi optimization off and back in business.
Now to figure out proper network settings. I find the phone not on 4g when it should be
Click to expand...
Click to collapse
I'm glad I could help.

OuncE718 said:
I'm glad I could help.
Click to expand...
Click to collapse
Hi, I know the thread is old but my download speeds are slow with my OPO. And just with my OPO. (Iphone, Ipad, Former HTC One M8 works fine)
I realised it with the Facebook App and in the Google Play Store.
When I open the Store and go e.g. to games section, it shows me the games apps but not their pictures. If I turn off WiFi it works well.
Same in Facebook, I can read the comments but can't see the pictures. Again, turning off WiFi and using my mobile connection works fine.
I turned off the optimization, but it didn't help.
It increased the download speed (Speedtest App from Ookla) to 25 Mbits (from 12 with optimization) but the surfing problem remained the same..no pictures in Google Play Store e.g.
Im getting 40 Mbits with my Ipad 3 (without losing any) and 60 mbits with my Notebook.
I restartet the phone (shut down, wait 10 sec, turn on), turn off and on the wifi optimization, checked my WiFi-Channel with "WiFi Analyzer".
When i turned on the flightmode and then turned on only WifI, I got 55 Mbit download! My connection worked fine for a few minutes and went back to 12 Mbit (with optimization) and 25 Mbit (without optimization)
How can I fix this issue? Surfin with WiFi at home is not possible like that, even when I'm getting 25 Mbit as downloadspeed, which would be more then fine to surf on the phone..
Edit:
Im running the newest: 11.0-XNPH38R

Hey folks!
It's worth checking, take a look into Settings -> Performance -> per-app profiles. Make sure it's unticked.
With that option enabled I had maximum download/upload speed up to 5Mbps and it was driving me crazy, I was thinking of selling 1+. Anyway, disabling per-app profiles saved the day and download speed was as on N5.
Hope it helps.
Pavel

Wifi download's speed using Google services like backup and play store is slow

Hi. Thanks for this guide. I was able to install Android 9 though VPN. I was having a problem with background apps even with adaptative battery off. I solved it by entering at the list of apps/procces and disable the optimization on them. Everything now is ok except WiFi download speed using Google services. Download's speed in Google play store is 0.1 mb/a when normally is 6 mbps on android oreo(previous version). When I turn off the Phone and then i turn on, WhatsApp starts to do a security backup at its normal speed but after a few seconds the download speed is 0.1 mbps.But the strange thing is that on 4g mobile data it downloads normally. I don't know what to do. I cleared the caché and data from Google services and nothing. Is this a bug or something? My Phone is not rooted and the bootloader is locked.
Edit: I reset my phone to default settings. It still has Android 9. The first time did not make difference. The second time the download speed was back to normal but after an hour after the reset it went back to 0.1 mb/s.
Edit: If i turn on airplane mode the download speed is at full speed. Can someone explain me why is this happening pls? Thanks.
EDIT: Solved by turning off location: settings->security and location->location-> turn off by sliding the slider. I don't know if this options have these name. I have my phone in another language. I will update my post. This solution is not a real solution since you turn off location and some apps need it.

It's happening to me too. Will wait for update (on the post or SW).

Here it's happening only on 2.4Ghz network, using 5Ghz it's normal speed... Other devices are working fine on the same 2.4 hotspot, so definitely a bug.
Sent from my Mi A2 Lite using Tapatalk

Found out that if you disable locations services (bt also helps) the download speeds goes back to "normal".

senntennce said:
Found out that if you disable locations services (bt also helps) the download speeds goes back to "normal".
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I already said that above this post at EDIT

evolveordie1 said:
I already said that above this post at EDIT
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Sorry! Have not noticed that. There are some bugs that need to be fixed. Will either downgrade out wait a little more to see if a solution/update is provided.