WiGLE.net

Does anyone know what would cause there to be significant differences in the database sizes on different model android phones?

No matter how many times I upload and 'import database', the database sizes are never ever close.
I'm currently running WiGLE on the following android devices:

Note3 SM-N900V 5.0
Note5 SM-N920I 7.0
Galaxy S7 Edge SM-G935A 8.0
Galaxy S7 SM-G930P 8.0



What gives?

import database doesn't import observations; there's data on-device that never gets uploaded. we'll be phasing the old import out (which only downloads BSSID/SSID for "newness") in favor of the import mechanism introduced in 2.52, which can download complete summary records of each upload - but there isn't a pure cross-device "all data" sync mechanism by design.

I'll note that for personal data backups, db export is exhaustive, and you can easily query/merge SQLite DBs, but trying to put everything you have *ever* seen on every device is a quick way to degrade stumbling performance and run out of space - merging and manipulating your data on desktops/laptops/servers instead is strongly recommended.