Complex sentence: Pakistan has many new mobile phone franchises which has started to attract many Pakistani's to buy their phones many of them are Pakistan's own and some of them are China's popular companies like Gfive, Huawei, Oppo Electronics, OnePlus, and Haier.
Split into simpler sentences: Pakistan has many new mobile phone franchises which have started to attract many Pakistanis to buy phones. Many of them are Pakistan's own, some of them are China's popular companies like Gfive, Huawei, Oppo Electronics, OnePlus, and Haier.