ZTE Citrine
How to get the best out of your ZTE phone
2. You should set your default storage to the SD card.
3. In spite of this any updates to your user installed apps will be installed in local memory. For every one of these updates you will need to go Settings, Apps and select the app by name and push the button for MOVE TO SD CARD.
4. The above is a pain but it lets you have a useful phone at a bargain price.