I’ve had two different unihertz models, and neither of them could stay on any wifi, and both of them dropped calls like crazy. I contacted customer support, and they ‘offered’ to swap for another exact same phone, if I paid to ship both ways, and I didn’t mind having no phone for a month. Jelly 2, and Atom XL. The Atom was especially bad as it has a giant bloody antenna sticking out the top of it, and still no WiFi!

Avoid Unihertz.