What is use Hall IC and grip sensor

Thank sir update k liya per sir game k perform per bi dyan da taki game khlta vakt phone hang n ho or better caller id taki kisi k no. Located ya uska bra m jnn sk ki ya no. Kiska ha kyuki agar 3rd party app use kerta ha to hacking ki problem hoti

How to identify any phone number. Because true caller are identified but Samsung galaxy j6 infinity are not identified any phone number please help

My phone is no update Samsung version 10. My phone is Samsung j6 infinity