Momwe mungadziwire nthawi yomwe mauthenga athu a WhatsApp awerengedwa pa iOS ndi Android Mabungwe AchikhalidweWhatsApp idasinthiratu pamayendedwe a mafoni posintha kwambiri njira yolumikizirana kudzera pachida chamtunduwu, zomwe zidapangitsa ogwiritsa ntchito kusiya kugwiritsa ntchito mameseji achikhalidwe (SMS).