Old iPhone as wifi device
I am needing to access a work app and have to use an iPhone. I have a VERY old iPhone in good shape, and was able to reset it, but it appears to only be able to make 911 calls. I have tried with and without the SIM and am wondering if there is any way to get this back to the regular screen without actual phone service so I can just use this one app I need. Thanks so much for any help y'all can provide!
iPhone