OnePlus 3 with AT&T - not able to get LTE connection

[speedlever]

I'm using what is here:

https://forums.androidcentral.com/e...ed any difference on my phone in either case.

 

[DavidsTech]

After seeing this post I went and looked closer at my OnePlus 3T. I'm using it on AT&T. It doesn't show LTE on the status bar but I never looked into what its supposed to show with various towers.
But after looking in the settings I do see it's on LTE.

Used LTE Discovery to see which band I'm currently on. Band 2 at the moment.

 

[speedlever]

Sometimes I see LTE and other times I don't. Currently, I do not see LTE in the notification bar, but using LTE Discovery, I see I'm on band 17.

 

[kach474]

None of these work for me. I've tried several different APN settings some found here some elsewere. NXTGENPHONE, ATT HSPA+, ATT PHONE, ATT WAP none work. Tried rebooting each and tried each with SIM slot 2. Called ATT today they gave me one to try and checked the imei number. Said it was provisioned and good to go. I have an ATT SIM card new less then a year ago working in a Blackberry Priv 4g with no issues. After all that still "H" no 4G. ???? Any ideas. I'm ready to sell this and go back to my Blackberry.

 

[speedlever]

So you've followed this guide to a "T" and still no joy? In that case, I have to wonder if you have a defective phone?

And what's up with the forum today? It's become too large to view on my display.

 

[kach474]

That's correct. Those settings exactly. Nothing. My device has been unlocked. If that has an effect

 

[DamianP]

Have you tried getting a new sim card? I have had no issues on ATT at all.

None of these work for me. I've tried several different APN settings some found here some elsewere. NXTGENPHONE, ATT HSPA+, ATT PHONE, ATT WAP none work. Tried rebooting each and tried each with SIM slot 2. Called ATT today they gave me one to try and checked the imei number. Said it was provisioned and good to go. I have an ATT SIM card new less then a year ago working in a Blackberry Priv 4g with no issues. After all that still "H" no 4G. ???? Any ideas. I'm ready to sell this and go back to my Blackberry.

 

[kach474]

Have you tried getting a new sim card? I have had no issues on ATT at all.

No still on the same SIM. It was new in July and has been in 3 phones since. All with no issues. Guess i could try.

 

[kach474]

Anyone know if the Oneplus3T is having similar problems?

 

[speedlever]

That's correct. Those settings exactly. Nothing. My device has been unlocked. If that has an effect

Well, the OP phones are all unlocked, fwiw (not tied to any carrier).

I'm stumped as to your problem. Have you posted over on the OnePlus Reddit? Talked to OP customer support?
https://www.reddit.com/r/oneplus/
https://forums.androidcentral.com/e...%3A%2F%2Foneplus.net%2Fsupport&token=n3BuKHWC

 

[speedlever]

That's correct. Those settings exactly. Nothing. My device has been unlocked. If that has an effect

Hmm. I just tried something. After changing my access point Name and APN settings back to ATT phone and phone respectively, I now see LTE in the notification bar. However, using LTE Discovery, it still shows I'm on Band 17.

One other thing I noticed is that with the recommended settings from the AT&T link above (access point name: NXTGENPHONE and APN: NXTGENPHONE), I couldn't get the speedtest.net app to work. It said something about connection difficulties (and yet I've noticed no difference in service). But once I change the access point name and APN back to the original settings (ATT phone and phone respectively), the Speedtest app worked and LTE shows in the notification bar.

I'm not sure what to make of that. But, I would suggest that you change your access point name and APN to:
Name: ATT phone
APN: phone

and see if that makes any difference for you.

 

[kach474]

Hmm. I just tried something. After changing my access point Name and APN settings back to ATT phone and phone respectively, I now see LTE in the notification bar. However, using LTE Discovery, it still shows I'm on Band 17.

One other thing I noticed is that with the recommended settings from the AT&T link above (access point name: NXTGENPHONE and APN: NXTGENPHONE), I couldn't get the speedtest.net app to work. It said something about connection difficulties (and yet I've noticed no difference in service). But once I change the access point name and APN back to the original settings (ATT phone and phone respectively), the Speedtest app worked and LTE shows in the notification bar.

I'm not sure what to make of that. But, I would suggest that you change your access point name and APN to:
Name: ATT phone
APN: phone

and see if that makes any difference for you.

Thanks. Yup had that running all day today with those settings. Rebooted no change. I have good cell and 3 speeds. Pulling over 6mbps. But still would like LTE

 

[kach474]

Well, the OP phones are all unlocked, fwiw (not tied to any carrier).

I'm stumped as to your problem. Have you posted over on the OnePlus Reddit? Talked to OP customer support?
https://www.reddit.com/r/oneplus/
https://forums.androidcentral.com/e...%3A%2F%2Foneplus.net%2Fsupport&token=CGedzL2P

No haven't posted over there yet. Read most of the threads though. Gonna try a new sim. Then maybe OP support. Thanks

 

[kach474]

Also when i say it's unlocked I mean there is the warning on the first boot screen about being unlocked and can't be trusted?

 

[kach474]

Well got in touch with OP customer service. Appears I have a China model. Anyone know how to tell the difference between the China model and the north American model? Everything I have found shows they have the same model number?

 

[speedlever]

What is your model number?

Settings/About phone says mine is ONEPLUS A3000.

 

[kach474]

Yup mine is A3000 also

The full model number is A3000_16_161118

From what I have found the North American model and the China model have the same number. But they have different bands. I have not found out how to tell the difference between the two?

I gave the customer service rep for Oneplus my imei's. He said the imei's on my phone are in their database as the China model.

 

[ironass]

The OnePlus 3 worldwide, Global, model is A3003.

However, both China and the U.S.A. still have the old CDMA networks as well as the worldwide GSM. These CDMA models are labelled as A3000.

As we can see below, the China A3000, CDMA model, is not compatible with the U.S. AT&T 4G/LTE network, whilst the North American, CDMA, A3000 models, are. Whether this is because of modem/baseband/radio firmware or because of hardware, I cannot say.

OP3 China, A3000, model on AT&T network



OP3 North American model, A3000, on AT&T network

 

[speedlever]

How would the OP know whether he has a USA or a China version then? While there must be a method to the madness, it certainly doesn't make any sense to me that OP would give two different phones the same model number.

 

[kach474]

How would the OP know whether he has a USA or a China version then? While there must be a method to the madness, it certainly doesn't make any sense to me that OP would give two different phones the same model number.

Yes this is my question as well. How do you tell? Especially when buying off of ebay or other used phones.