Same here worked fin for about 6 weeks then last 3 weeks no signal at home down stairs and weak upstairs, all my text start ariving at night when I go up the stairs!!! Went back to shop and changes SIM no difference, put sim into wifes Smasung and no problem with signal, so has to be the phone. The last Xperia Aqua I bought developed an issue after ~1year with the SD/SIM slot and kept falling out. This will be the last Sony I buy, which is a pity as they look great and have high specs.
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