When the tech won't cooperate B1
The wifi playing up, a phone needing charging, and asking someone to wait.
play up B2 — stop working properlyThe wifi's playing up again, the video keeps freezing.
hang on — wait for a short timeA: Can you help me with this?
B: Hang on, let me finish this email first.
charge up — fill the batteryI'll just charge up my phone before we head out — it's nearly dead.
Dodgy connection
A: Can you hear me? The wifi's playing up again.
B: Hang on, let me move nearer the router.
A: Any better? You keep freezing.
B: I'll sort out the router, give me a sec.
Dead battery
A: My phone's about to die, I need to charge it up.
B: Hang on, there's a plug behind you.
A: Brilliant, it's been playing up all day with the battery.
B: Leave it on charge, we're not in a rush.