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Since updating the operating system my mobile data does not work
Hi @Luis35
Welcome to the community!
Sorry to hear about that 
You may just need to download the internet and MMS settings on your handset. To do this, go to settings > more > internet settings > accept.
Once you have done that restart your handset and try to use your mobile data.
Let me know how it goes 
i HAVE THE SAME PROBLEM, AND TRYED TO RESET MY PHONE BUT DOESN'T WORK, EVEN I TRIED go to settings > more > internet settings > accept. BUT DOESN'T WORK EITHER. CALL MY SERVICE PROVIDER BUT THERE IS NO PROBLEM WHIT MY PLAN ...