[Q] No 4G from O2 on Z3 - Xperia Z3 Q&A, Help & Troubleshooting

Hi All
My phone signal and 4G does not work despite changing to a new Sim card as advised by O2. I fear it is a problem with my phone but feel that it is just a change in the setting needed to enable 4G.
Currently, the preferred network type is 4g (preferred) /3g/2g. I had reinstalled O2 network settings as well. When I try to select 4g o2 network, I receive a message that it cannot connect to network, try again later. It defaults to 3g o2 but the signal is lost and I miss out calls and texts.
It is worth noting that there is no problem in my area as my brother is with o2 and he is getting 4g just fine. Plus, I have checked on O2 website and it appears fine.
Any help in the matter would be greatly appreciated.
Thanks
Fred

Related

3G on XDA?

Hi all,
Sorry if this seems a dull question but ........
I have an XDA1 and wonder whether I can use it on the 3G network? If not, how about the XDAII?
My present phone is a Motorola A920 using the 3G network but I'd got used to my XDA and prefer it!
My XDA1 has been unlocked.
Many thanks
John
Have you found out any news about using the 3G network on the XDA or XDA II? I have an XDA II and would find it intresting if there was software update or somthing like that
The XDA1 and XDA2 does not work on 3G networks (UMTS) as the frequency is different and the transceiver in the 1 & 2 does not support this.
There is though a new XDA3 on the market which supports 3G, but I dont know where it is available.
I think you will find that a 3G XDA has not been released as yet. for information on XDA III (name may cause confusion in O2 camp, re 2nd article) see:
http://www.mobile-review.com/pda/review/htc-blue-angel-en.shtml
http://techdigestuk.typepad.com/tech_digest/2004/07/xda3_or_is_that.html
my xda works on a 3 sim, but takes about a minute to find network. it roams to o2. can't sms.
when ever 3g phones cant reach a utms signal it just use gsm of cause only for talk
so there should be no problems using a 3g sim since it will just work as a normal gsm sim in a non utms phone
but i'm prettty sure that they dont offer grps roaming
software can never make a xda1-3 or any other non utms phone a utms phone just like an old 56K modem cant be software upgraded to a cabel modem
I would love to have 3G Network. Their data connection is as fast as 144kbps DSL speed. That's much faster than GSM network.
I'm playing in the field of 32kbps with GSM network. Blah, you call that the speed of DSL as they say? Right. :roll:
I have an XDA 1 which works just fine with my 3 sim BUT I cannot send SMS only receive, don't know why and haven't found anyone on this forum who can explain why.
SIM Manager doesnt work either, just says SIM is busy. Try again in 5 seconds but I could wait a month of Sundays and the SIM is still busy.
messing around with my xda1 last night, which has an o2 and a 3 sim in it. had the 3 sim selected, made a new work connection called Three, apn: three.co.uk, username: netservices. pressed connect AND IT DID!! BUT tried to access web and then wap, NO JOY. all other settings are for o2 payandgo online. when i had 3 sim in 3 phone i DIDN'T have to be in a 3g area to access all 3 services. any ideas if i can get any transfer going through xda? plus my new 3sim has arrived, NOT putting that in just yet!!!
3g or UTMS is not supported in many places and when you get out of their range their just do gsm and grps
there should not be a problem getting the services of 3g to work but you dont get the speed because you are not getting utms signal just be having sim it's on a different set of frequencies
there are CF and maybe SD cards out there which act as utms modems which can give a pda a nice internet speed boost though
yeah i know i won't get any extra speed, but it did connect to GPRS via the 3 sim, yes i know it was roaming to o2, the thing is i still want to see what i can get it to do. if i could get it to view FULL internet even at GPRS speeds, for NO charge then that would be good. my 3 package is 3togo, no monthly fee, no free mins, you only pay for what you use,you get a bill later.
You weren't technically roaming with o2.
Three uses o2 as a carrier network for 2.5G communications.
I've tried a Three SIM in my XDA II with similar results to you. However, i've noticed that in the latest XDA II o2 ROM upgrade, they install video calling applications.
I'll keep you posted - I work for Three so I know the details
driftingaway said:
You weren't technically roaming with o2.
Three uses o2 as a carrier network for 2.5G communications.
I've tried a Three SIM in my XDA II with similar results to you. However, i've noticed that in the latest XDA II o2 ROM upgrade, they install video calling applications.
I'll keep you posted - I work for Three so I know the details
Click to expand...
Click to collapse
Also, it could be a matter of smsc centre being incorrectly configured when the 3 sim is placed in the XDA device
rgds
jim
Guys,
Don't keep your 3 usims in 2G handsets for very long. If 3 notice you are constantly roaming on o2 they *will* block the SIM.
Did anyone end up find out if you can actually sms with a Three sim in it ?
driftingaway said:
i've noticed that in the latest XDA II o2 ROM upgrade, they install video calling applications.
Click to expand...
Click to collapse
Nah. There's a video mms application and you can also download or stream short video clips but these are all gprs services. Video calling is a 3g only service and no xda device has the hardware/software for that yet.
JD

3G doesnt work in my htc touch pro

good morning ,
i bought htc touch pro unlocked and i inserted my AT&T but i cants see 3G in my phone and i just see E (EDGE)
i dont know why my phone support 3g bands
i have rom sense
pleeeeeeeeeeees help
and i tried my sim card into blackberry and its shows 3G
I HAVE unlimited data plane
3G doesnt work in my htc touch pro
Hi,
I had the same problem in the beginning. The simple solution: I still had an "old" SIM card, which was not capable of 3G. A simple request to my provider, and he sent me a new one (same tel number, no contract change / renewal) at no cost.
Regards,
c-net
c-net said:
Hi,
I had the same problem in the beginning. The simple solution: I still had an "old" SIM card, which was not capable of 3G. A simple request to my provider, and he sent me a new one (same tel number, no contract change / renewal) at no cost.
Regards,
c-net
Click to expand...
Click to collapse
thank u but my sim card is 3g , i tried it into blackberry and it shows 3g
maybe this will help
go to start > settings > phone
then click on BAND tab and make sure the network type is set to WCDMA and the second drop down box has AUTO selected.
and press ok.
The phone should now look for the 3G network. Make sure you rem that if you are not in 3G network, your phone wont auto shift to Edge network, you would have to go back to the top steps and select GSM instead of WCDMA.
Hope this helps. If this doesn't work I bel there's some prob in the hardware or sim or the damn network itself !!!
I have the same issue
I have the same problem and i've tried radio 1.14.25.35 for at&t and with the same version for the rilphone.dll. i did find out that the version of the phone i have may be an issue. Raph100 (under the battery) EU 07/09/08 REV.EU01 (bottom left corner) under battery cover. I tried enabling hsdpa and hsupa. no help. i am using Energy.RAPHAEL.23563.Sense2.5.GTX.Themed.Apr.24 ROM. and i max at 50 kbps.
i did find some references with the phone:
gps issue:
http://forum.xda-developers.com/showthread.php?t=426433&page=3
If any gurus have any idea why this is the way it is.. please give us an update.
Thanks in advance.

Can't connect to 4G [SOLVED]

Hi all,
I got my Mate 7 (LT-09, european version, 2gb black version, stock 4.4) about a month ago. I'm from Czech republic, so at first I thought that it can't connect to 4G just because of low 4G signal. However, I study in Edinburgh where the 4G signal should be good (my friends connect to it with no problem), but my phone still doesn't connect to 4G. I have a 4G sim card, 4G giffgaff (virtual O2 operator) goodybag, so everything should be working. But, I can only connect to H+.
Also, when I try to register to a network, I can see three options - O2 2G, O2 3G, and O2 4G, however, when I click on the O2 4G, I get an error message saying "couldn't connect to the network, choose automaticaly?"
Does anyone have a similar issue? I'm really getting desperate.
Thank you
honza-m said:
Hi all,
I got my Mate 7 (LT-09, european version, 2gb black version, stock 4.4) about a month ago. I'm from Czech republic, so at first I thought that it can't connect to 4G just because of low 4G signal. However, I study in Edinburgh where the 4G signal should be good (my friends connect to it with no problem), but my phone still doesn't connect to 4G. I have a 4G sim card, 4G giffgaff (virtual O2 operator) goodybag, so everything should be working. But, I can only connect to H+.
Also, when I try to register to a network, I can see three options - O2 2G, O2 3G, and O2 4G, however, when I click on the O2 4G, I get an error message saying "couldn't connect to the network, choose automaticaly?"
Does anyone have a similar issue? I'm really getting desperate.
Thank you
Click to expand...
Click to collapse
sometimes u got to set the right apn.i got ultra mobile with t mobile net work.the apn that the sim card has is only for 3g or h+.i got to maually set the apn ,after that i got 4g lte all the time
dc0321 said:
sometimes u got to set the right apn.i got ultra mobile with t mobile net work.the apn that the sim card has is only for 3g or h+.i got to maually set the apn ,after that i got 4g lte all the time
Click to expand...
Click to collapse
Thank you for your anwer! I had the right settings (at least I think so), but I was so desperate that I upgraded to android 5.1.1. There it didn't work as well, but after I updated the apn I got 4G! So it was probably just bad APN settings. Thank you so much, didn't realize that could be a problem.
what apn did you use , i have fast.t-mobile.com, all i get is 3g or H+ i already set it to WCDMA only for preferred network type
I used the settings from giffgaff.com website, so I suppose you should get yours at your regional t-mobile website. Just make sure that you're using the correct one, as there can be defferent apn settings for 3g and 4g (that's what happened to me, and that's why I didn't realise it was an apn problem). Hope this helps.

No 4g network

I need help!!!
I am using moto g3 dual sim in india. Earlier, i was using 4g but 2 3 months back my phome stoppped recieving 4g network on this number.
I changed my sim twice and factory resetted my phone twice. I even tried contacting airtel customer care bit they were unable to rectify this issue.
Finally i ported out of airtel and got idea but still when i select 4g network of idea is unavailable.
I am in delhi where 4g network is available.
I have used my friends sim card of airtel and idea in the same slot, then 4g works. The issue seems to be with my number only.
Please help.
Go to the dialer
Dial *#*#4636#*#* a window will open
Go to phone information and set preferred network
type as LTE Only
Go to setting - more - mobile network - and set preffered network type as LTE Only
You are done wait a minute you will get 4g network
No 4G connectivity for so many months
I'm using VALIDUS -OSPREY-7.1.1
V-13OFFICIAL-20170107-20274
KERNAL VERSION 3.10.49-MPI24.241-2.35-1-ge38ba3b
[email protected] #1
I'm unable to connect to 4G network for almost 3 months. Previously was using Postpaid Airtel Sim which worked fine. But after switching to prepaid new number which is also Airtel 4G i couldnt able to access to 4G connection.
Got help from the provider even after resetting the network settings and eve
Tried with other sim card on my device which is also not working with 4G while my sim card is working with other devices and no sim card is getting connected to 4G in my device as of now.
Is this the fault of network? Or is this Bug from the OS?
try flashing modem again from stock firmware. hope that helps

LG V20 AT&T access O2

Driving me nuts - should be so simple.
I have a 2nd hand AT&T LG v20 (H910)
The guy I bought it for claims it works on EE
But I cant get it to work with an O2 Postpay sim. (The O2 sim works perfectly in another phone)
Ive been into Settings->mobile networks->View networks and O2 is listed
I can select O2.
O2 is then shown at the top of the screen and there are 3 bars of signal strength
But I cant make or receive a call. If I try to call It eventually times out with the message 'Network Unavailable'
Digging around some more I find
- the networks it can detect include O2 RAT 4G (along with Vodafone, EE, 3 and can be 4G and/or 3G and/or 2G). O2 RAT 4G is the only O2 network detected and the phone says it is registered on this network
- A different (but similar) phone on which the SIM card works (LG V20 H990DS) detects primarily 3G networks (Vodafone, EE, 3, either 3G, 2G or both) including O2 RAT 3G and the phone says it is registered on this network
So maybe I have to change the networks to which the phone can connect . . . . but how do I do that?
Any suggestions as to how I get this phone to work on O2 postpay

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