I have been using one variant of this card for more than 3 years now. I have sandisk ultra microSDHC UHS 1 card with adaptor, 16 GB.It has a good speed of upto 30MB/s 200x. It is ideal for any android phone. I use it for my moto e1. It comes with a waranty of 1 year.I bought it from flipkart. It has minimum waste temporary space.It has created no issue of malwork or corrupted script even till now. I am more than happy with it. I have used transcend , sandisk and many more in the past, but I found that sandisk is abolutely the best.