Iphone 4s connected to Wi-Fi but apps won't update?

It says i'm fully connected but the apps won't update.

i'm at a university so restarting my modem isn't an option. I already restarted my phone and turned Wi-Fi off and on again.didn't help.

any advice?

Added (1). Sorry, when i say "update," i mean refresh. The apps look like they're gonna refresh, but they take forever and then don't refresh.

There might not be an update available.sorry

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