Android menus differ by brand, but the diagnostic order remains the same: compare networks, permissions, account state, and hardware signs.
When Android says a Bluetooth speaker, headset, or car is connected but music is silent, confirm volume on both devices, select the accessory as the media output, and enable Media audio in the saved-device settings before removing the pairing or resetting networks.
A stuck queue, weak connection, low storage, account state, Play Store services, date/time, or device policy can leave downloads pending or failing.
High screen use, poor signal, background apps, location, heat, a recent update, or an aging battery can increase power use.
The SIM or eSIM may be disabled, poorly seated, damaged, unprovisioned, carrier-locked, or affected by a phone radio or software problem.
A saved-password mismatch, router issue, private DNS setting, or network configuration problem is usually responsible.