Why is 3G in Huawei Honor 4C very slow?

I'm having full signal strength of 3g even though i can't able to access Internet with 3g speed.. And i can't able to access some apps like play store , flipkart ... Showing error

Keep in mind that there are a lot of factors to slow internet. Some of the network load, your location as walls interfere with signal, coverage area (you may be in a weak spot), distance to the nearest cell site, your phone may also be malfunctioning, or there's an on-going maintenance. If problem persist, contact your service provider or ask someone with the same carrier if they are experiencing the problem.

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