Slow data is usually caused by network congestion or weak signal.
Try these steps in order:
Quick fixes:- Switch between 4G and 5G in Settings → Cellular → Data Mode
- Move to a different location (away from buildings, underground, or remote areas)
- Restart your phone
Manual Network SelectionIf automatic network selection picks a weak or congested carrier, you can switch manually:
- Go to Settings → Cellular → DataSIM line → Network Selection
- Disable Automatic Network Selection
- Wait for the list of available networks to load
- Select a different carrier from the list
Wait 1–2 minutes after switching for the new network to register
If the new network is also slow, repeat the process and try another carrier. Once you find a stable network, you can leave it on manual or re-enable Automatic.