blow up (one's) phone
To call someone repeatedly or send someone a lot of text messages. A: "Hey, your phone keeps lighting up!" B: "Ugh, I wonder who's blowing up my phone." A: "It's fine, I just texted him a few times." B: "More like 15 times! Stop blowing up his phone!" Sorry, my mom's blowing up my phone right now because she wants me to get some stuff from the grocery store.
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