LG V20 AT&T access O2 - AT&T LG V10

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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[Q] No 4G from O2 on Z3

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.
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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.

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A9 3G not working.

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Force/edit connection to mobile networks

Hi! I have a specific trouble, searched in Internet and I finally decided to ask here. I hope someone can give me some "illumination" to this...
I have an old FreedomPop sim in Spain (3G only). It works with Orange 3G in my town (the "official" mobile network is Yoigo 3G, but there isn't here, so Orange cover it in its place). The problem is that the carrier set the SIM up wrongly and it "believes" that Movistar is an available mobile network for data, but it doesn't (FreedomPop had contract with them at the beginning, but not anymore, as far as I know).
So, before I went to a town with a Yoigo 3G network, it connected sometimes to Orange, sometimes to Movistar. They never appear together in the mobile networks section in my Android when I look them up: it's just Movistar, Movistar and Vodafone, or just Orange. If I'm lucky, it catches Orange; if not, it connects to Movistar (so no data at all, just emergency calls).
So, after I went to that Yoigo 3G town, my cell phone never catches Orange anymore. FreedomPop offered a free SIM change to us users (with LTE speed), but with worst contract conditions, so I would like to keep this one.
My question is: is there any way to "say" to the cell phone that ignore the SIM info about "it's ok to connect to the Movistar mobile network"? I tried tons of times to find it in the mobile networks section, but Orange doesn't appear (I have another cell phone here that requires Orange and it's always connected)
I have a Sony Xperia Neo V (mt11i) with a manually flashed Android 4.0.4 (official). Any help will be appreciated.
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