Sony Xperia M4 Aqua
My M4 Aqua (sometimes) gets no sim - no service and if I restart the phone, everything works again!

I don´t need to remove the sim-card, just restart!

What can I do! I have tried a new Sim-card! Updated the software! Sony-service has replaced the motherboard!

But I still have this problem! The phone can work fine for days, weeks, then suddenly the Sim problems starts! Some days you have to restart the phone several times!

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Sounds like a strange one, im leaning towards a software issue but the sounds of it, have you tried a hard reset (full factory reset?) 

Doing a full factory reset and updating the software to the latest stock version will eliminate a software issue, if the issue persists after this you may need the SIM reader replacing, its a solder job but im sure some of the guys here can help / quote that for you.

Kind regards,

Steve Garner | Replacebase Founder 

Need support? my team are happy to help - | 01604924700
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