I was using it without any wep key last day i put the key to secure the network but after that i am not able to use wifi internet on my samsung omnia HD i18910 what i am doing wrong any solution.
Try usin TKIP security rather using wep. It will work.
and mind sharing how to do that?
Well there should be 3-5 options for securing your router:
WPA (TKIP AND AES)
WPA2 (TKIP AND TKIP+AES)
Try changing your security mode from your router.
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How many devices you connect to your router? If they are the same devices everyday then I’ll suggest to turn on the MAC filter in your TP-Link router and add the MAC addresses of your devices so that only your devices can access router. This is much more secure than key encryption. Using it with the combination of key encryption is the most secure solution for wireless router security.