I'm having the same problem. I can't even update my apps now due to lack of space on internal storage. I even bought a new sd card to mount as internal storage. More fool me. The 'fixes' suggested by the xperia are extremely poor and probably copied and pasted from the idiots guide to phone storage. I'm using a 3rd party app to transfer data to sd card but the amount of apps I use that require internal storage only has filled up all 16gb. This should be my choice to format sd as internal storage and not just remove it from the update. If this isn't fixed in an update the only option I can see is to get a new phone. Which I'm reluctant to do because I do like the Z3 Compact and I will have to buy out half of my contract.
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