Causes and ways to fix iPhone does not turn on 4G
not turning on 4g on iphone is a situation where there is no 4g or lte icon on the iphone's wave column but only 3g or e, ... the following article will give you the most common
Tags : 4g sim
Instructions on how to register 4G Viettel SIM is completely free
if you intend to use 4g network with fast speed of data download, you should not miss the opportunity when viettel operator is changing sim 4g for free.
SIM pairing 4G is locked on iPhone lock in Vietnam - Users should be careful!
this morning, after apple locked the ios 10.3.3 and 11 sign, many users confirmed that they could not activate their iphone lock with 4g sim card.