The most significant difference between mobile tempered glass and ordinary glass in a mobile phone is their ability to resist impacts. Tempered glass is designed to withstand high impacts, such as drops or hits, without breaking or cracking. Ordinary glass, on the other hand, is much more fragile and can easily break or crack when subjected to even minor impacts. Another difference between mobile tempered glass and ordinary glass is its scratch resistance. Tempered glass is much more scratch-resistant than ordinary glass.