I know saving a TB to the PC and reusing it later if required is fine on the same phone and ROM (I've done it with a different ROM from the one the TB was made with no problems as well, but I know it can cause issues. Now after submitting my SGSII to a slow death by dropping it in water over a month ago, the lovely Vodafone retentions dept. have let me upgrade much earlier, start a new contract with the same number and waived the three months left to run on it. So a SGSIII is arriving Tuesday . Shows what persistence and paying your bill regularly by DD can get you, if you whine enough (pride V a shiny new phone=no contest)! I suppose I'd cause myself more grief than it's worth using an SGSII TB on an SGSIII, but has any one tried ? I think my son (and, erhem, yes his Dad !) would hate losing all his progress on "Cut the Rope", "Angry Birds" and "Pudding Monsters". If I can't restore it and have to redownload from the Play store.