I cannot share my Lumia’s internet connection with another device

  1. Switch Battery saver mode off, or connect a charger to your phone: Tap Settings > battery saver > Off.
  2. Check the signal strength on the phone screen. To increase the signal strength, move around, or move towards a window if you are inside a building.
  3. Keep your phone in the idle mode, incoming or outgoing call will interrupt the data transfer until the call ends.
  4. Check the cellular data indicator (E, 2G, 3G, H+, 4G) at the left side of the phone's screen. Change the mobile network highest connection speed from 3G/4G to 2G and back again to make sure that your phone is connecting to the network correctly. Go to Settings > mobile network (or mobile+SIM or cellular or cellular+SIM).
  5. Make sure that the internet sharing security type (if not selectable, WPA2 is used) and password settings match between the connecting device and your phone (Settings > internet sharing).
  6. Make sure that the operator mobile data plan subscription allows Wi-Fi tethering and your network operator has enabled internet sharing on the phone.
  7. If possible, try to create a connection with some other device or force the connecting device Wi-Fi adapter to use 802.11g standard - disable 802.11n mode. On a Windows PC, go to Control Panel > Network and Internet > Network Connections, and right click your active Wireless Network Connection and open Properties > Configure > Advanced, then select 802.11n and set value to Disabled. Once ready, press OK.
  8. Connect again, as internet sharing switches off after 5 minutes of inactivity.