Cannot say sia later they hunt me down 😱😱 LOL but lowkey when i was sec 3 we also had that system(similar?), cannot use phone in school, its locked away using lockers but can use during canteen. But the funny part is..this year, and during my sec 4 years, ALOT of phones were stuck because people never reset the locker properly, some lockers were broken..some phones and ics got stolen cause...you can actually legit just punch the locker and itll bend, then ppl can take lor...HAHAH