Welcome. Try turning off cell service; better yet, place phone in Airplane mode.
Short of that, reset the Tello.
procedure hard reset to factory
any one know hard reset procedure had password set forgot tried to reset comes up as just Tello in wifi setting still asking for password used to be something like when first got Tello_**** android system cant restore no video wont connect Thanks.tellopilots.com
Let us know how it goes.
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