Measurement of the resonance curve (Acoustics)

[icarochiabai2]

Hi, I'm a college student and I'm running an experiment just like Hayla, but when I try to run this experiment, sometimes my app just crashes and reload, making me lose the data collected and having to start all over again. In the first few times that this occurred it was fine, I moved on and restarted, but now its happening almost all of the time and now it's really annoying, I'm unable to complete a run because it crashes in random values for the frequency like 400Hz, 870Hz, 1370Hz, and my goal is to reach 3000Hz using 10.0Hz as the frequency step. 

Anyone knows how to solve this? I'm using a Motorola E7 Plus with up to date android and updated phyphox, I already have tried disabling WiFi, Bluetooth, notifications, enabling plane mode, closing all other applications but nothing seems to work.