Should have listened to all the negative reviews. I've been on the phone with T-Mobile for 3 hours so that the device recognizes the SIM card. All he said was an invalid SIM card bought from a T-Mobile store and set to a hotspot plan. Their explanation was that the IMEI number is being returned because the device is partially compatible, whatever that means. Anyway, this device didn't work with tmobile sim card and data only with the data plan offered. I want many others to say stay away from this point.
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