Originally Posted by docfreed
Just keep airplane mode (Setttings>Wireless) on all the time - no need to ever turn it off since there really is no phone in this tablet.
That doesn't stop the phone modem. If you check the settings you will see that the device is still picking up signal from the cell towers. It just isn't connecting with the mobile network.
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Phone: HTC One M8 T-Mobile, Stock ROM KitKat
Tablets: Lenovo IdeaPad A2019 9" Tablet / ICS | Dell Venue 7" Tablet / JB
Laptop: Toshiba Satellite T925u / Windows 8.1
Former Phones: Ericsson T-28, Ericsson R600 World, T-Mobile Windows Phone, HP 6310, Sony-Ericsson M600, HTC Pharos, Asus P527, HTC Tilt2, HTC HD2, HTC Amaze, HTC M7