Q would modify Maps so that it actually works. Then, at the end when Bond is left with some beautiful lady, he would switch back to Apple Maps, so that Mi6 can't find him.
Q would also add NFC, so Bond could buy some chips in the Casino. Maybe a nice piece of fish too.
Q would then add a better camera, make it quad-core, add ...... OK, Q would invent an iSpy iphone6.