    Sentence. 4: | havé ‘detivated 4G  on: my Airtel. SIM, . but whenever  L- try: to: recharge. the 4G! pack  on -Airtél, “the: website “says |  neéd a:4G SIM ‘even though my  SIM=is' already 4G...Who knows  about this; issue?    Sentence 2; Cah’! Use SIM on  4G network?