Why you can trust TechRadar
So what other phones might you be considering if you're in the market for a OnePlus X? Here's our round-up of the phones we see as the main rivals to the latest and cheapest handset from OnePlus.
Moto G 2015
Motorola's latest cheap but powerful phone is the company's third attempt at a budget handset, and while there are no big differences over previous phones a few tweaks have improved this model, and it offers an impressive spec list for this end of the market.
This time around we loved the camera, there's a water-resistant design and it delivers pretty good performance. It is a little bulkier than before, and it's thicker than the OnePlus X – and there are no front-facing speakers.
The Moto G costs £209 / $219 / AU$306 for the 2GB RAM and 16GB storage version, or £179 / $179 / AU$250 for the 1GB RAM and 8GB storage edition. And of course it's much easier to get your hands on a Moto G than a OnePlus X.
Moto E (2015)
If you're looking for an even cheaper Motorola handset, the Moto E has the lowest price in the range coming in at only £99.99 (around US$120, AU$190). This may be a good choice for you if you're looking for a low price phone, but you will miss out on the high-end spec you get with the OnePlus X.
The phone includes a 4.5-inch display with a pixel resolution of 520 x 960, a little lower than the 1080p OnePlus X screen. You can also get an LTE version of the phone that comes with super-fast internet connection and a strong quad-core processor under the hood.
Camera wise it includes an 8GB rear facing shooter and on the front is a 5MP shooter. The spec isn't fantastic on the Moto E, but it's at least half the price of the OnePlus X so maybe it's a better choice for you.
The bigger brother to the OnePlus X, the OnePlus 2, was released earlier this year. It's not much more expensive than the OnePlus X, starting at £239 / $329, and offers a 5.5-inch 1080p display, a better processor than that in the OnePlus X, and a far stronger camera setup.
It's now on open sale indefinitely, so no more hunting for an invite, and if you don't mind spending a little extra money the OnePlus 2 is a far superior phone to the OnePlus X.
Sony Xperia M4 Aqua
Here's another 5-inch phone that may be more to your tastes. As it's a Sony phone there's a big focus on the 13MP camera, but the processor isn't as strong here, with a Snapdragon 615 under the hood and 2GB of RAM.
The big bonus here is in the design. Unlike the OnePlus X, it's waterproof and dust-proof – you wouldn't go scuba diving with it, but it'll easily withstand splashes and brief immersion at the beach.
You can get a Sony Xperia M4 Aqua for £170 (about US$285, AU$435). We wouldn't particularly recommend it over the OnePlus X, but it's certainly a decent alternative.
One of the biggest flagship phones of 2015, the LG G4, has been shrunk down into a smaller package called the LG G4c. It includes a 5-inch 720p screen, a Qualcomm Snapdragon 410 and an 8MP rear-facing camera.
When you compare its spec list to the OnePlus X, it doesn't look especially impressive. But you may much prefer the design of the LG G4c, and it comes in at a similar price point to the OnePlus X.
And once again, the LG G4c is a much easier phone to get your hands on. If you're looking for a quick buy and decide that trying to snag a OnePlus invite isn't worth the effort, this could be the phone for you.
James is Managing Editor for Android Police. Previously, he was Senior Phones Editor for TechRadar, and he has covered smartphones and the mobile space for the best part of a decade bringing you news on all the big announcements from top manufacturers making mobile phones and other portable gadgets. James is often testing out and reviewing the latest and greatest mobile phones, smartwatches, tablets, virtual reality headsets, fitness trackers and more. He once fell over.