I keep getting issues with Android apps saying they can't install updates. First it was just one or two, now the entire list of things that wan't to update seem to be refusing, one after another. Most of the apps are on the SD card anyway, but I recently moved another couple onto it using the phone's own facility for doing this. Its a Sony Xperia Z5, and no, I don't want to replace it! I own it, and I no longer have sufficient funds to buy a replacement of similar standard.
Any ideas, other than the classic blast off and nuke from orbit? Surely it can't need a phone signal as well as wifi, can it? That's tricky in my house, you can generally have one or the other, but not both, unless the lords of electronic magickery see fit to bestow our phone signal indoors, which is not common. The apps appear to download, and then fail to install. The phone has plenty of storage space left, both internally and on the 64GB SD card.
Edit: I should add its not ALL apps, as its updated BBC news, and the MySkoda app this morning.