I tried a different brand that looks identical and it works great for about a half hour then phone freezes or hdmi disconnects itself for no apparent reason. Have you tried watching an entire movie at one sitting?Postscript: I use a device by Towabo 3.1 USB 3.1 Type-C to HDMI. Use both on my TV and computer. Ive had an excellent experience thus far. Bought 2 by mistake. Glad I did.