why is my phone not picking up wifi suddenly

Hi. My phone is doing exactly the same. I've done the network reset multiple times. I have no cover on it and if I do it's silicone gel. iPhone 6 still can not find any wifi signals. Help please.

Hi Vash_m,

Welcome to Apple Support Communities.

It sounds like your iPhone isn't able to find a Wi-Fi network. Take a look at the article linked below, it has some great suggestions for troubleshooting Wi-Fi issues including what I've highlighted below.

iOS: Troubleshooting Wi-Fi networks and connections

http://support.apple.com/kb/TS1398

Unable to locate a Wi-Fi network

1. Verify that the network is available by tapping Settings > Wi-Fi and choosing from the available networks. Note: It may take a few seconds for the Wi-Fi network name to appear.
2. Move closer to your wireless router (access point) and attempt to locate the Wi-Fi network.
3. If you do not see the network you would like to join, you may be attempting to connect to a hidden network. Learn how to join a hidden network.
4. Supported Wi-Fi configurations vary by iOS device model. Find out which standards your device supports3.
5. Reset network settings by tapping Settings > General > Reset > Reset Network Settings. Note: This will reset all network settings including:
• previously connected Wi-Fi networks and passwords
• recently used Bluetooth accessories
• VPN and APN settings

I hope this helps.

-Jason

Thank you for using the Apple Support Community. Due to the nature of your issue or question you may find more information by using another one of Apple's support resources - https://getsupport.apple.com/GetproductgroupList.action.