Its 3G ...
I did all what i know ... change date ... reset data ... on/off lenove tab ... on/off WiFi ... remove all apps ... its connected to WiFi but no internet service ... all time give me alarm (DATA SERVICE IS BLOCKED) ..
Any suggestions !!
Bassam
As I asked above, have you spoken to your carrier about this? They might want to give you a new SIM card. Also, make sure your APN settings are correct for your carrier.