Huawei is expected to be developing a tri-fold smartphone and a prototype of the purported device was recently spotted in the hands of a top official at the company. While there is no timeline regarding its launch or information about what it could offer, a claim on social media has suggested its exorbitant price. As per the claims, the development prototype of the handset costs about $4,900 (roughly Rs. 4, 11,000) and the Chinese company is…