Has anyone else ever experienced any types problem with the umx cellphone model number u683cl

Recently gotten the cellphone umx model number u683cl was wondering if anyone has experienced any problem with it just curious if it good phone or not

Yes!   I can't do any wifi calling on it.  When I call out (using google voice or any other wifi calling app), the person on the other end can't hear me.  And it won't accept any incoming calls on a wifi app.  

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