Why can't my unlocked S6 Edge select LTE?

[AC Question]

Unlocked S6 Edge cannot select LTE

I have a Galaxy S6 Edge, Model SM-G925W8, that I recently unlocked from one carrier, and transferred it over to another carrier (Telus). When I factory reset my phone, the phone automatically connects with LTE. However, whenever I enable airplane mode or restart the phone, it no longer is able to connect with LTE, only 3G. I have checked under Mobile networks, Network Mode, and there are only three options (WCDMA/GSM, WCDMA only, and GSM only); there is no 4th option for LTE! How I activate LTE (bear in mind that it DOES work with the network as after factory reset, it works; restarting the phone somehow triggers my phone to lose LTE). I know the answer lies with dialing some type of code *#4646 or whatever, I just haven't found any threads specific to S6 Edge. Thank you!

 

[STARGATE]

Re: Unlocked S6 Edge cannot select LTE

Have you checked that you have the right APNs for the new carrier?
My GS6E has an Automatic setting. Can you use that and see if the phone connects to LTE?

 

[STARGATE]

Re: Unlocked S6 Edge cannot select LTE

About the code, I'm not sure it's the same for all the phones, but if I come across it, I'll let you know.

 

[kunit17]

Re: Unlocked S6 Edge cannot select LTE

Yes, the APN settings are all correct (double checked with Telus).