I too have followed numerous fixes without success but seemed to have found a solution by chance.. Some reference in one thread to possible 'damage' caused by the power connection.. So I decided to connect my power lead, go outside n run GPS Test whilst just tweaking the connection lead slightly up or down.. Miraculously I got a 10 out of 20 satellite fix.. Tried my Runtastic app also n that managed a GPS fix as well after about 30 seconds.. Not sure if the fix will last, but it would appear to be a 'mis-connection' to the GPS antenna caused possibly by the power connector.. Had similar issue with my maim camera, wasn't connecting unless I pressed case near to where the connection was located.. But after reading posts about that also, a quick squeeze of the case at that point n that was working again also.. I am guessing some dodgy connectors inherent on the Sony Xperia main board..
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