Database Info

Xiaomi Mi 4

Does anyone know if this Mi 4 or any of the other phones work out of box in canada?
If not, is there a way to get it working on LTE ?
THanks,

Only LTE bands it has out of the box are 1,3 and 41. I am on AT&T in US and no LTE. Edited NV values successfully but no additional LTE bands were enabled.

augie7107 said:
Only LTE bands it has out of the box are 1,3 and 41. I am on AT&T in US and no LTE. Edited NV values successfully but no additional LTE bands were enabled.
Click to expand...
Click to collapse
That is unfortunate to hear, what is the fastest connectivity you're getting?
I'm on the AT&T equivalent in Canada known as Rogers.

About 7MB/S which is terrible. I like MIUI and this device is nice quality. Dare I say it has the feel of an iPhone but is loaded with Android so the best of both worlds (I personally detest the closed source IOS). So I'm suffering with no LTE just to use the MI4 but I've got a ZTE Axon for a backup if I need a LTE compatible device. Always near WIFI so it's not often. I will say, no dropped calls or texts with it and I've had it a couple weeks. Call quality is excellent.

Best you can get is 3G or H+. Also in Canada on Fido

dont buy the chinese LTE edition. i hear that does not even do 3g. the wcdma (w) variant does 3g/H+
Sent from my iPad using Tapatalk

deaglecat said:
dont buy the chinese LTE edition. i hear that does not even do 3g. the wcdma (w) variant does 3g/H+
Sent from my iPad using Tapatalk
Click to expand...
Click to collapse
I have the China Union LTE model and it has 3G on AT&T.

I am not doubting you. But there are 2 LTE variants.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
TDD LTE <<< GSM 2G ok but no WCDMA 3G
FDD LTE <<< This is the Western one with WCDMA (3G) support

AT&T V10 (H900) has no band 17 support?????

I noticed GSM arena posted some variant specific specs for the V10. They stated that the H900 didn't have band 17 LTE, I thought this couldn't be possible. I checked AT&T's website, sure enough, no band 17. It has the lesser used band 29 (also 700mhz). Can anyone explain why this is? Where i live only band 17 LTE is available, so I hesitate to get the V10. Since both B17 and B29 are 700mhz, would the V10 be able to connect to band B17?
Here it is, straight from AT&T's website:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

I made a post about this if you want to check it out. The short and sweet of it is that bands 12 and 17 are being merged, and they were always on the same frequency from the start, so having both bands is redundant. In other words, since band 12 is available, band 17 is as well, as confirmed by another user for the T-Mobile variant (but it still applies for the AT&T variant).
And if you're really skeptical, don't forget that you are entitled to a buyer's remorse in which the carrier must refund your purchase.

ubergeek77 said:
I made a post about this if you want to check it out. The short and sweet of it is that bands 12 and 17 are being merged, and they were always on the same frequency from the start, so having both bands is redundant. In other words, since band 12 is available, band 17 is as well, as confirmed by another user for the T-Mobile variant (but it still applies for the AT&T variant).
And if you're really skeptical, don't forget that you are entitled to a buyer's remorse in which the carrier must refund your purchase.
Click to expand...
Click to collapse
Thanks for the explanation ubergeek. So this means that even an older phone that only supported B17 will now work on, for example, t-mobiles band 12? Very cool!

urushiol said:
Thanks for the explanation ubergeek. So this means that even an older phone that only supported B17 will now work on, for example, t-mobiles band 12? Very cool!
Click to expand...
Click to collapse
An older phone that supports B12 can support B17 but only at the specified frequencies it's set at.

Are all variants the same lte band support?
Sent from my iPhone using Tapatalk

One word answer, yes.
Sent from my SAMSUNG-SM-G920A using XDA-Developers mobile app

5G or dual 4G

Anybody encounter this? When I try to select 5G as preferred network. It says I have to disable dual 4G which effectively made the phone single sim... I wonder if other phones are like this as well. This could be due to 5G is still NSA now which means phone has to connect to both 4G and 5G at the same time.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Sent from sagit

I think this phone is not advertised as dual 5G, check Redmi 10x pro 5g, it says first dual 5G phone.

I got my Poco today and was surprised at this. I assumed I could have my data SIM set to 5g if available and my other to be still available...

This is stupid, and obviously a software limitation since other phones with the same cpu and modem can activate both sims simultaneously with 5g on one of them. Poco should fix this issue with a software update.

ozkaya said:
I think this phone is not advertised as dual 5G, check Redmi 10x pro 5g, it says first dual 5G phone.
Click to expand...
Click to collapse
I'm not expecting it to be dual 5G.i just want the other sim to work when I activate 5G on the other one. At least 4G on the other sim will be good.
Sent from F2 Pro

in global rom poco f2 pro if 5G Enable only 1 sim must work but in china rom or eu rom one sim 5G another 4G work Great

lovers74 said:
This is stupid, and obviously a software limitation since other phones with the same cpu and modem can activate both sims simultaneously with 5g on one of them. Poco should fix this issue with a software update.
Click to expand...
Click to collapse
That is not true, the Snapdragon 865 can use 2x 4G or 1x 5G, only the new MediaTek can run both with 5G (800, 820 and 1000).

Linuxkek said:
That is not true, the Snapdragon 865 can use 2x 4G or 1x 5G, only the new MediaTek can run both with 5G (800, 820 and 1000).
Click to expand...
Click to collapse
It is true and was working on my S20 ultra and also on mate 30 5g, MediaTek is not the only chipset that does it

lovers74 said:
It is true and was working on my S20 ultra and also on mate 30 5g, MediaTek is not the only chipset that does it
Click to expand...
Click to collapse
Exynos & Kirin, not 865

Linuxkek said:
Exynos & Kirin, not 865
Click to expand...
Click to collapse
Not true, I had SM-G9880 Hong Kong version which was Snapdragon and it worked

On the user manual it says that the Dual SIM with a sim in 5G will be activated with future updates. Do you know anything about the activation date?

saturn3000 said:
On the user manual it says that the Dual SIM with a sim in 5G will be activated with future updates. Do you know anything about the activation date?
Click to expand...
Click to collapse
Nobody knows that... For now only few Xiaomi devices are capable to work on dual 5G standby (Mi 10 Lite 5G and Redmi 10x 5G as I know).
But that was the same problem in the beginning with dual 4G... On most devices this has been enabled with update...

Poco F2 Pro or K30 Pro/Zoom for Vodafone UK?

hi guys & gals,
currently using poco f1 and tempted to upgrade but was wondering from any vodafone uk users, which would you recommend? My sim is 5G enabled but currently using 4G. I know Band 20 (800) is missing from the K30 pro but have any users had any issues with 4G reception? I found a price of £370 for the K30 pro (8/128) or the pro zoom at £422. tbh i dont really use the camera much so missing OIS is not that important.

I would check what 5g band Vodafone uses. Specially if you want to use 5g. You may have problems with 4g cause Vodafone uses bands are missing from the k30 pro.
I think if you would have a different provider, probably wouldn't even notice the missing bands but Vodafone is the most affected on this.
On the poco however only supports 2 5g bands. I would do my research before purchasing if I was you. GL

dead0 said:
hi guys & gals,
currently using poco f1 and tempted to upgrade but was wondering from any vodafone uk users, which would you recommend? My sim is 5G enabled but currently using 4G. I know Band 20 (800) is missing from the K30 pro but have any users had any issues with 4G reception? I found a price of £370 for the K30 pro (8/128) or the pro zoom at £422. tbh i dont really use the camera much so missing OIS is not that important.
Click to expand...
Click to collapse
Get the Poco f2 pro instead of k30 pro, it has band 20
It's basically the same phone, except network bands. Got mine from AliExpress for 420 but now it's about 380£. It works fine with EE

According to this site https://kenstechtips.com/index.php/uk-network-frequency-bands Vodafone uses N78 which the Poco f2 pro has.

dead0 said:
hi guys & gals,
currently using poco f1 and tempted to upgrade but was wondering from any vodafone uk users, which would you recommend? My sim is 5G enabled but currently using 4G. I know Band 20 (800) is missing from the K30 pro but have any users had any issues with 4G reception? I found a price of £370 for the K30 pro (8/128) or the pro zoom at £422. tbh i dont really use the camera much so missing OIS is not that important.
Click to expand...
Click to collapse
K30 Pro Zoom is better with OIS and same price than POCO F2. I dont have problems using it without band 20 in Spain, I have very good 4g signal and I use same bands than vodafone UK (B1, B3, B7). Also If you have 5g enabled I would prefer K30 Pro because it have more 5g bands than POCO F2 and, if im not wrong, next year companies will add band 1 (n1) support to 5g and only chinese K30 Pro have it:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

I have Poco F2 Pro on Vodafone (Voxi) in the UK, no problem with 4G - same reception as my pixel 3a. I don't have a 5G plan though so can't comment on that.

so been playing around with network signal info for the past few days, even though 4g band 1 was being used (80%), it would still fallback to band 20. as i also travel to thailand quite regularly, 5g band n41 would have been useful so looks like the f2 seems to be the one. the zoom would have been nicer tho

took the plunge and got the poco 8gb for £325.99, just waiting on dhl

dead0 said:
took the plunge and got the poco 8gb for £325.99, just waiting on dhl
Click to expand...
Click to collapse
Great price, where was that from?!
Sent from my Mi A1 using Tapatalk

Dazeon said:
Great price, where was that from?!
Sent from my Mi A1 using Tapatalk
Click to expand...
Click to collapse
tecobuy. its been shipped already with dhl. unfortunately it was only the phantom white color which they had for the lower price but gonna use a case with it anyway

Question Abysmal LTE experience

I got the phone yesterday and LTE is so bad. It is unusable to the point there's no internet connection at all.
I noticed its LTE bands kept on changing from 1 and 8. It stays at 8 for a couple of minutes where there is no internet connection.
When it switches to band 1, the connection is back and speeds are normal but the band goes back to 8 after couple of seconds.
I'm aware that Poco X3 NFC also has an LTE issue, will a software update fix this issue? Thanks.
Edit: My previous phone was a Note 8 Pro with the same sim card and same location with no LTE problems.

AxisKiku said:
I'm aware that Poco X3 NFC also has an LTE issue
Click to expand...
Click to collapse
Do you have the X3 NFC or X3 Pro?

TheReduxPL said:
Do you have the X3 NFC or X3 Pro?
Click to expand...
Click to collapse
X3 Pro

Here is working fine.
Are you sure is not something related with your operator?

DJPRMF said:
Here is working fine.
Are you sure is not something related with your operator?
Click to expand...
Click to collapse
I inserted the sim card back to my old phone and LTE works fine.

There are different LTE frequencies. Some models may use different frequencies that POCO X3 Pro doesn't use...
And that may be causing issues - not because the phone itself, but because the LTE provider.
Isn't something easy to check, try see around the area if there is any "spots" of issues and contact other people in the same area to see if there are some issues around.
From POCO itself, i don't have any issue with the connection and i use it all day long (may be only my case, but is something)

DJPRMF said:
There are different LTE frequencies. Some models may use different frequencies that POCO X3 Pro doesn't use...
And that may be causing issues - not because the phone itself, but because the LTE provider.
Isn't something easy to check, try see around the area if there is any "spots" of issues and contact other people in the same area to see if there are some issues around.
From POCO itself, i don't have any issue with the connection and i use it all day long (may be only my case, but is something)
Click to expand...
Click to collapse
Okay, I might also try to use a different carrier to verify if it's an operator issue. Thanks for responding.

AxisKiku said:
I got the phone yesterday and LTE is so bad. It is unusable to the point there's no internet connection at all.
I noticed its LTE bands kept on changing from 1 and 8. It stays at 8 for a couple of minutes where there is no internet connection.
When it switches to band 1, the connection is back and speeds are normal but the band goes back to 8 after couple of seconds.
I'm aware that Poco X3 NFC also has an LTE issue, will a software update fix this issue? Thanks.
Edit: My previous phone was a Note 8 Pro with the same sim card and same location with no LTE problems.
Click to expand...
Click to collapse
What country are you located?... My X3 Pro I purchased hasn't arrived in the mail yet, but I own the Poco F1 and LTE performance works fine w/ no problem

urbanman2004 said:
What country are you located?... My X3 Pro I purchased hasn't arrived in the mail yet, but I own the Poco F1 and LTE performance works fine w/ no problem
Click to expand...
Click to collapse
I'm currently residing in the Philippines and the carrier in question is Globe Telecom. I was also not having issues with LTE on other phones either, only with X3 Pro.

AxisKiku said:
I'm currently residing in the Philippines and the carrier in question is Globe Telecom. I was also not having issues with LTE on other phones either, only with X3 Pro.
Click to expand...
Click to collapse
Oh I see... That might explain things since I'm located in the US. I believe your LTE experience/performance is tied to the carrier you use and if the bands on the device are compatible w/ their service.

Just an update, a temporary fix I did is I disabled all LTE bands except for band 1 and seems to be working as it should it be.

AxisKiku said:
Just an update, a temporary fix I did is I disabled all LTE bands except for band 1 and seems to be working as it should it be.
Click to expand...
Click to collapse
I took mine today and realized the same problem. It also had a Redmi Note 8 Pro that worked normal. Even with VoLTE that I couldn't get on the Poco X3 Pro. How did you change the bands? Obs. I'm from Brazil.

I experienced the same thing in Hungary. I use 2 pieces of sim, the data sim if it is in slot 2 does not use the band that is optimal for us. It see, but you won’t be willing to join it if you have better signal strength. Placing the card in the Sim1 slot goes flawlessly. Try sim1-sim2 swap. -Sorry for my English-
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Connect to b3 band only, it seems that b20 has a much better field strength.
I tried to flash another modem firmware anyway, it didn't work.

In europe I have 3CC B3+B1+B7 on Poco X3 Pro or any other devices also works B20.
Poco X3 Pro with X24 Give me record for this cell tower.
Signal is great very similar to Huawei 5G CPE Pro 2 with uses Balong 5000.

tftcamilo said:
I took mine today and realized the same problem. It also had a Redmi Note 8 Pro that worked normal. Even with VoLTE that I couldn't get on the Poco X3 Pro. How did you change the bands? Obs. I'm from Brazil.
Click to expand...
Click to collapse
Hi sorry for the late reply, the issue went back after a week I locked the bands. I ended up installing a custom ROM (crDroid) and it fixed it. Receiving messages are now instantaneous and LTE is working flawlessly.

My POCO X3 pro is back from repair, network issues. All they did was update the software. Today I bought a second sim card, in my country it needs to be registered for someone to work. Such a starter.
Since the second card was inserted, the network problems have completely disappeared. I emphasize that the second card still does not work, it is inserted and only has a range bar. I am waiting for confirmation of registration of this SIM card