wifi disconects doesnt reconnect

[anitat]

my samsung doesnt reconnects my wifi back, ended up using a lot of data ???? why is this happening.. 

[Tallman]

Maybe you need to restart your router or modem instead.

[Valeriya]

Hi anitat, is it happening only with one device or all other devices as well? However, I suggest you to try the suggestion provided by Tallman. Thank you for the response, Tallman.

[anitat]

its doing that on two of my device but other phones in the household (not android) is fine

[Valeriya]

Hi anitat, I suggest you to perform a network reset.

Step 1. Go to Settings, and then select General management. Step 2. Find and select Reset.

Step 3. Choose Reset network settings.

Step 4. Tap on the Reset settings button.

Step 5. Tap on the Reset button.