Gmail may not sync on your Android or iPhone due to several common issues such as poor internet connection, outdated app version, incorrect account settings, or disabled sync options. Sometimes, background data restrictions, low device storage, or battery saver modes can also interrupt syncing. On iPhone, issues with iOS mail settings or app permissions may cause delays. Ensuring stab... https://hackmd.io/@VeZd7WLKSNimxK_Val9mFA/why-is-gmail-not-syncing-on-my-android-or-iPhone