Huawei — device's severe heating problem

I have bought a new honor 9 lite phone through flipkart and it has been delivered today on 20th aug 2018. The problem with the phone is that it gets heated up once i use it for 3-5 mins. What is the solution for this? Kindly help me. Shall i return this phone?

Honor 9 lite
Imei1: [protected]
Imei2: [protected]
S/n: 9sf3y[protected]
Model: lld - al10