Wack, all surveillance agencies would applaud this. Default bitcoin wallet on mobile threatens you privacy because of gyro sensor on the board of cell phone. The data from that sensor can be easily lifted, so surveillance agencies use it to their advantage to build the fingerprint of your walking manner. If you care the privacy of your transactions don't keep bitcoin (and any crypto) on mobile.
What does the gyro sensor and walking data have to do with the Bitcoin app? If a phone brand wants to do this, they'll do it in the background no matter what app you're using or not. If walking/location data is a problem for you, then better yet just take your phone with you but place it in a faraday bag.. or get a dumb phone.. or don't take it at all?
If their intention is to track you down, they have so many ways to do it nowadays. For one, your internet connection and/or cell tower are two basic things that are easily able to approximate your current location.