Crazyflie 2.1+ falls out of air (android app control)

[cameronalred]

This month our lab purchased a set of 3 crazyflie 2.1+s. We forgot to get a crazyradio for PC control and will order a few at some point, but in the meantime I am test flying them with the Android app. I've been having the same issue with all 3 Crazyflies:

-I plug in to charge and wait for the blue LED to stop flashing
-I connect to the app
-I am able to take off and fly for some random time, sometimes up to a minute, sometime as little as 9 seconds
-The quadcopter suddenly loses all power and drops to the floor, before restarting itself post-crash
-I have to power cycle it to be able to get it to connect and fly again.

It's worth noting that the console messages I get appear cut off, such as:

unning!
3.11) CLEAN
ash!
ce.
K].
OK]
]
(1) estimator
roller
river
tem.c.
21)
]
]

I am using Android 13 on a Samsung Galaxy S20 Ultra.

I am hoping that this issue is at least specific to the app control, and doesn't persist with crazyradio control, but I wanted to bring it up in case it's indicating a deeper problem.