The following is a video on how to check IMEI through a live provider.
So each provider is different, for friends whose 4G signal is missing on the iPhone, try checking the IMEI first, like this video.
Sure if it's registered and still 3G, maybe the leadership database hasn't been updated at this time. however the customs have already paid off.
Okay, just watch the video, this time I will share it with Indosat and Telkomsel providers, guys.
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