my contacts were last synced one month before, and I have added a few contacts to my phone since then. My question is, if I delete data from Contacts Storage and re-sync with google, will I lose those contacts which I recently added over the last month (which were not synced)?
My educated guess would be, yes, you'd probably lose the ones you've added to your phone that didn't get synced to the cloud (Google). BUT, that shouldn't be a problem, as there are many apps on Google Play that will let you backup your contacts to a file, and restore them later. You should probably back them all up to a file first, then delete the Contacts Storage, re-sync them from Google, then you can restore the changes you made. I personally haven't tried this app, but it sounds like it should do the trick for ya.
. Just go Settings > Account > Google and toggle the Contacts Sync switch to on. Here is another tutorial to backup contacts android
Visit my YouTube guide for step by step guide
OK i have ??? a solution.
The problem is depended on phone's ram. If you have 1gb ram, then each of your contact must not have more than 100 contacts. I splited contacts with many numbers to 2 or 3 parts, with less of 100 numbers each, and now sync is working fine.
Interesting! Thanks for sharing that, Lazaros.