This buyer's guide is brought to you in partnership with ExpertReviews.
Looking for a smartphone this Christmas? On a tight budget? Check out this selection of five Android and Windows phones at the lower end of the price range which have been tested and compared by the nigh-on obsessive experts at ExpertReviews.
Vodafone Smart Ultra 6
ExpertReviews say: "The super-sized Vodafone Smart Ultra 6 is a phenomenonal smartphone for its price. Costing just £125 on Vodafone's PAYG service, this incredible handset has a 5.5in Full HD display, 13-megapixel camera and a super-fast Snapdragon 615 processor. It's tied to Vodafone, of course, but you won't find a better value smartphone for less."
Price when reviewed: £125 PAYG. For the latest prices, see ExpertReviews full Vodafone Smart Ultra 6 review
Processor: Octa-core Qualcomm Snapdragon 615, Screen Size: 5.5in, Screen resolution: 1,920x1,080 Rear camera: 13-megapixel Storage: 16GB, Wireless data: 3G, 4G, Size: 154x77x8.4mm, Weight: 159g, Operating system: Android 5.0.2
Motorola Moto G (3rd Gen, 2015)
ExpertReviews say: "The 2nd Gen Moto G was an exceptional smartphone, but the latest version of Motorola's monumental handset is even better. While it's not quite as good value as its predecessor, the 3rd Gen Moto G is by far one of the most comfortable and attractive budget smartphones around. Its large 5in HD screen looks great, has a fantastic 13-megapixel camera, and its battery life is best in class."
Price when reviewed: £159 SIM-free. For the latest prices, see ExpertReviews full Moto G 3rd Gen 2015 review
Processor: Quad-core 1.4GHz Qualcomm Snapdragon 410, Screen Size: 5in, Screen resolution: 1,280x720, Rear camera: 13 megapixels, Storage: 8GB / 16GB, Wireless data: 3G, 4G, Size: 142x72x6.1mm, Weight: 155g, Operating system: Android 5.1.1
Motorola Moto E (2nd Gen, 2015)
ExpertReviews say: "If you're looking for an extremely low-cost and compact Android phone, the 2nd Gen Motorola Moto E is an excellent choice. Available for just £109 SIM-free or £7.50-per-month on contract, this phone has respectable performance, a great screen (even if its 4.5in 960x540 display is a little low-res), and its battery life of 13h 30m in our video playback test is also fantastic for its price. It also runs the latest version of Android Lollipop."
Price when reviewed: £109 SIM-free. For the latest prices, see ExpertReviews full Motorola Moto E (2015) review
Processor: Quad-core 1.2GHz Qualcomm Snapdragon 410 Screen Size: 4.5in, Screen resolution: 960x540, Rear camera: 5-megapixel, Storage: 8GB, Wireless data: 3G, 4G,Size: 130x67x12.3mm, Weight: 145g, Operating system: Android 5.0.2
Microsoft Lumia 640
ExpertReviews say: "This is the perfect Windows phone for those on a budget. At £10.50-per-month on contract or £120 SIM-free, the Lumia 640 not only has a great battery life and 5in 720p screen, but its funky colours help make it stand out from the crowd. It also comes with the latest version of Windows Phone 8.1 operating system, which is due to be upgraded for free to Windows 10 Mobile later this year."
Processor: Quad-core 1.2GHz Snapdragon 400, Screen size: 5in, Screen resolution: 1,280x720, Rear camera: 8-megapixel, Storage: 8GB, Wireless data: 3G, 4G, Size: 141x72x8.8mm, Weight: 145g, Operating system: Windows Phone 8.1
Vodafone Smart Speed 6
ExpertReviews say: "Vodafone’s new Smart Speed 6 provides a well overdue shot in the arm to cut-price £50 handsets. You'll need to join Vodafone to get one, as it's only available on Pay as You Go, but if that doesn't bother you, then this compact smartphone is easily the best in its price range."
Price when reviewed: £50 PAYG. For the latest prices, see the full ExpertReviews Vodafone Smart Speed 6 review
Processor: Quad-core 1.0GHz MediaTek MT6735M Screen Size: 4.5in, Screen resolution: 854x480, Rear camera: 5 megapixels, Storage: 8GB, Wireless data: 3G, 4G, Size: 132x65x9.9mm, Weight: 146g, Operating system: Android 5.1