Problem

[Pewaaa]

So I did a factory reset on my Samsung A series phone and transfered all my data from my previous phone to my current phone bothe A series

Now problem is I don't know what to do the moblie data don't turn on like I turn on the data and nothing happens I appear is offline but there are so many Gigabytes of data on the Sim but when connecting to wifi there is no problem

I remove the Sim put it in another phone and the mobile data still is showing and everything is working

Can someone please help

[TeeA]

Try turning on flight mode and then when it's on turn it off, hopefully it will work since it will disable and re-enable the radio then try again

[Brad_K]

Could your A series phone be networked locked to a different network than the sim card ?

[Anonymous]

Maybe you have to reconfigure the APN (Access Point Names) in Settings>Connections>Mobile networks>Access point names after a factory reset.