Apple finally unveiled iPhone SE, an upgrade from iPhone 5S and claimed to be the most powerful 4-inch phone. So iPhone se or iPhone SE? 4-inch fans get confused to choose. Despite that iPhone SE with big screen can be controversial, the fact that iPhone SE are perfect video players is beyond doubt. In this article, you’ll learn how to play YouTube videos on iPhone SE offline, including YouTube HD videos, 720P, 1080P, 4K UHD and 8K videos. 
What issues When Playing Youtube Videos on iPhone SE
YouTube HD Videos have been available in a range of quality levels, with the higher quality levels offering improved picture definition. If you own an iPhone SE, you probably have experienced some YouTube problems on iPhone SE, such as got error messages where the videos won’t just play. This can be frustrating especially if the video you were supposed to watch is a must-see and everyone in your circle has viewed it. Sometimes, it’s probably not the YouTube app on your SE model but problems emanating from your Safari browser. Regardless of what the problem may be, these unwanted situations can fortunately be done away with. Let’s delve on how exactly you can fix a YouTube iPhone SE problem in seamless fashion.
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How to Handle ‘iPhone SE Won’t Play Videos’ Problem?
Methods One: In order to get any videos played on iPhone, a part of users install third-party media players (VLC, KMPlayer etc.) for iOS. However, various playback errors may bother you now and then, for example no images, only audios; too slow to play a video; even crash during playback. Therefore, we suggest you to convert videos to iPhone acceptable formats with a video converter to erase iPhone not playing videos error.
Methods Two: If you want to play YouTube HD videos on iPhone SE without ads, buffering or other interruptions, you may need download Youtube Videos and an all-in-one YouTube Video Converter Ultimate. Here is review.
Free Download Best Youtube to iPhone SE Converter: 
Other Download:
- Pavtube old official address: http://www.pavtube.cn/blu-ray-video-converter-ultimate/
- Cnet Download: http://download.cnet.com/Pavtube-Video-Converter-Ultimate/3000-2194_4-75938564.html
Step-by-step guide: How to Playing Downloaded YouTube Videos on iPhone SE without Problems
Step 1: Click “Add Video” button to add your downloaded Youtube Videos. For Mac users you can turn to Pavtube iMedia Converter for Mac for further usage. 
Step 2: Now it is time to convert the YouTube video to MP4 format compatible with your iPhone SE. You can choose H.264 Video(*.mp4) or straightly by selecting “iPhone”. 
Note: If you’re interested in how to Get/Download/Make Ringtone for iPhone 6 (Plus), you can readhere.
Step 3: You can adjust the video resolution, frame rate, video quality, etc of your choice to get the best video quality as you want. 
Step 4: Specify output folder on your computer to save the output files. Click the “Browse” button to choose the path where you want to save the output files in.
Step 5: When it’s finished, you can easily add the converted media file into iTunes and sync them with iPhones. Now, just enjoy your downloaded YouTube videos on all iPhone models for watching on the go.
It’s worth mentioning this tutorial is available for Windows or Mac users. The choice is yours. Happy experimenting!
Note: You can also use Pavtube Video Converter Ultimate to enable the Blu-rays, DVDs, and ISO/IFO image files playback on iPhone SE.
Now try Pavtube multimedia tools versed in converting videos (SD/HD/4K UHD), movies (3D), TV shows(iTunes), music videos, discs (2D/3DBlu-ray/DVD/ISO) of various formats to iPad Pro, iPad Air 3, iPhone 7/6S/6S Plus/6/6 Plus, Xperia Z4, Surface Hub and other latest 4K mobile phones & tablets for watching on the go or at home. (See Pavtube Products comparison)
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Additional Tips: Fix the Problems of YouTube Not Working on iPhone SE
Problem 1: “Error in connection” – another common YouTube iPhone SE problem is the failure to update your modem firmware.
Solution: If you get connection errors often, try checking if the modem firmware is in the latest version. If not, try updating it to allow your device to draw a faster bandwidth connection.
Problem 2: The pitch black screen on YouTube embedded videos – you may visited a site and found a YouTube embedded video that you want to watch. However, you only get a black screen when you press play.
Solution: When this happens, open the settings and scroll down to the “General” option. Next, choose “Restrictions” to check whether your YouTube app is turned “On.” Now try watching the embedded video to see if it works.
Problem 3: “Cannot connect to YouTube” – such messages pop-up in the most unexpected times. This can be solved by simply checking your internet settings.
Solution: When the message above pops up, simply switch your connectivity to another network or scale down from 4g to 3g. If you are on WiFi, the problem is likely emanating from the router.
Problem 5: “Sorry, this video is not available on this device” – the main problem of YouTube not working on iPhone SE is probably that video is not accessible through the Safari browser.
Solution: Basically, there are videos not intended for viewing through a mobile browser and in such cases, you will likely receive the message above. In such a situation, begin by pressing the three lines on the top left of your iPhone SE, prior to scrolling down and selecting the desktop version – simple. Doing this changes the all YouTube videos from mobile format to desktop version.
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