Unfortunately I purchased one of these last week at full price (~$22) which I thought was a good deal. Especially when you compare it to Apple's official Lightning Digital AV Adapter ($75).
At ~$12 this is a bargain!!
I have not received the one I ordered yet but looks pretty straight forward from the video contained in the link.
MiraScreen LD5-1 Lightning to HDMI HD Cable Display Dongle For IOS Iphone 5 6 7 IPad
| Specifications: | |
|---|---|
| OS and OS-version / release | Linux |
| CPU-version / Processor | AM8252 |
| CPU speed (MHz) | 600MHZ |
| RAM (MB) | DDR3 128MByte |
| internal Flash (MB) | 128MByte |
| max. resolution | (1920 x 1080_30P) |
| USB | USB2.0 |
| Power | DC 5V/1A |
| Wifi module/version | N/A |
| Wifi frequncy (2.4G/5.8G) | N/A |
| RF / Antenne | N/A |
| Video-formats | avi, .divx, .mkv, .ts, .dat, .vob, .mpg, |
| .mpeg, .mov, .mp4, .rm, .rmvb, .wmv | |
| Picture-formats | JPEG, BMP |
| Audio-formats | MP1/MP2, /MP3, WMA, OGG, |
| ADPCM-WAV, PCM-WAV, AAC | |
| Voice Record | .mp3, .wav |
| File-formats | dobe PDF, MS Word, Ms Excel, Ms Powerpoint, I works |
| DLNA | Standard |
| ScreenShare | mirror |
| output | HDMI |
| System support | IOS8.0+ |
| Support list | iPhone 5, iphone5s, iphone6, iphone6 plus, |
| iphone6s, iphone 6s plus, iphone7, iphone 7 plus, | |
| ipad4, ipad mini, ipadAir, ipad mini2, ipadAir2, | |
| ipad mini3, ipad mini4, ipad Pro.iPod touch, iPod nano, |




So does this cable just pretty much shows what's on your iPhone screen up to the TV?