Is your issue that your device times out before you can finish the upload? It would probably help to reduce the resolution of your image. Or what browser are you using? I used to have painfully slow internet. My first move with a new firefox install was to open about:config, filter for "timeout", then on each entry that looked potentially relevant, multiply the value by four. Hardly ever timed out after that.
Or are you wanting an image host, to try uploading to a different server? I'm fond of
postimage.org. I find it works well with mobile. Of the links it generates, I use the one marked "direct link". Just know there are dozens or more free image hosts, so if you don't like mine, try another.
I have no idea what your level of "tech savvy" is, but in case you don't know, <img src="URL"> won't work with a filepath for the image stored on your device. The URL has to be on an accessible server on the internet. You won't have a proper URL to put into that tag until after you upload.