Can't change S7 phone from 3G to 4G.

[blue groper]

I have a refurbished phone and can't change to 4G. How do I post up a screen shot of the problem please?
Cheers blue groper
Thanks.

 

[mustang7757]

In settings connection mobile data you see any toggle?

 

[Javier P]

Welcome to the forums. What are you using to access the forums? See this guide.

https://forums.androidcentral.com/showthread.php?t=737130

 

[B. Diddy]

Welcome to Android Central! What's the exact model number of the phone, and which carrier are you on?

 

[blue groper]

Thanks for the replies. Here is a pic of the problem. I can't get to change the signal to 4G.
Cheers blue groper.

 

[B. Diddy]

Sorry, but that screenshot doesn't give us much helpful information. What's the exact model number of the phone, and which carrier are you on? There can be multiple variants of a phone, and some variants might not support your carrier's network bands.

 

[mustang7757]

Thanks for the replies. Here is a pic of the problem. I can't get to change the signal to 4G.
Cheers blue groper.View attachment 308525

Just curious how are you viewing your phone settings on the computer?

 

[blue groper]

I took a photo and downloaded it so I could post the pic. Have you any ideas why I cant select 4G and lock it in? It shows LTE when outdoors, but reverts to 3G when inside. When inside the phone is very slow, mainly trying to send photos in a text message.
Cheers blue groper

 

[mustang7757]

I took a photo and downloaded it so I could post the pic. Have you any ideas why I cant select 4G and lock it in? It shows LTE when outdoors, but reverts to 3G when inside. When inside the phone is very slow, mainly trying to send photos in a text message.
Cheers blue groper

Sounds like a carrier issue, which do you use ?

 

[blue groper]

I'm in Australia and use Telstra. I was in their shop this morning and they didn't think it was their problem. Maybe I should contact the company I bought the phone from as it could set up wrong from there.

 

[mustang7757]

I'm in Australia and use Telstra. I was in their shop this morning and they didn't think it was their problem. Maybe I should contact the company I bought the phone from as it could set up wrong from there.

Yeah , I definitely would start there, maybe a APN tweak is needed.

 

[blue groper]

Thanks .What is an APN please?

 

[mustang7757]

Thanks .What is an APN please?

Access Point Name ....you mobile device connection.

 

[blue groper]

I will check it out. Thanks again.

 

[mustang7757]

I will check it out. Thanks again.

Your welcome!

 

[B. Diddy]

I took a photo and downloaded it so I could post the pic. Have you any ideas why I cant select 4G and lock it in? It shows LTE when outdoors, but reverts to 3G when inside. When inside the phone is very slow, mainly trying to send photos in a text message.
Cheers blue groper

Does it drop down to 3G inside any building, or only certain ones? Cell signal can be pretty poor inside certain kinds of buildings, depending on their construction and depending on the carrier network.

 

[blue groper]

In some it doesn't work at all and some the signal drops to 3G from LTE. The worst is at home. My old phone and my wife's all work on 4G but this one struggles on 3G and won't go to 4G. It goes to LTE outside, but that's not very practical.
Thanks.

 

[B. Diddy]

Ok, so I'll ask again -- what's the exact model number of your phone in Settings>About Phone? The reason I keep asking is that one of the S7 variants doesn't support 1 of the 3 LTE bands Telstra uses, and if you're in an area where that missing band is important, your LTE reception may suffer.

 

[blue groper]

Thanks Diddy.
The model # is SM-G930K

 

[B. Diddy]

That variant should support all of Telstra's LTE bands, so we can rule that out.

Go to Settings>Wi-fi and look for an option for Preferred Network Type. What's that set to, and what other selections does it give you?