In my BSNL SIM, if I restart the phone or toggle flight mode on and off, the internet sometimes behaves unpredictably. Platforms such as YouTube, WhatsApp, Instagram, and Facebook function properly, but Twitter does not load, and websites like Myntra and AJIO remain inaccessible. Additionally, VPN connections fail, and Cricbuzz, Clash of clans does not open. In fact, even BSNL's own BSNL Selfcare app does not work. This issue typically resolves itself within one to two days, but if the phone is switched off and on again, the same problem recurs.