imo has long been a favourite for international video calls in Pakistan, especially for families with members working in the Gulf, because it keeps calls stable even on weak 2G and 3G signals common in rural areas. The app is light enough for older phones and bundles group calls with voice chat rooms for socializing. Pros: works smoothly on very slow connections, free international voice and video calls, end-to-end encrypted chats. Cons: interface feels dated next to newer rivals, occasional ads disrupt the experience. Best for Pakistani users with relatives abroad and older Android phones.