There are several websites that allow you to compare mobile phones based on their specifications, prices, and other features. Here are some of the most popular ones:

1. Gadgets 360: This website allows you to compare up to four mobile phones at a time based on their prices, specifications, display, storage, camera, battery, and rating.

2. PhoneArena: With this website, you can compare up to three devices side-by-side and view their detailed specifications, including size, camera, and benchmarks.

3. Smartprix: This website provides a comparison shopping experience by enabling side-by-side details of mobile phones with their latest price. You can compare up to four mobile phones in real-time and view their benefits, disadvantages, and unique features.

4. GSMArena: This website allows you to compare detailed specifications of mobile phones, smartphones, and tablets side by side. You can find which one is best for you based on their network, technology, body dimensions, weight, display, camera, battery, and more.

5. Versus: This website allows you to compare cell phones side-by-side based on their battery, camera, performance, and price. You can find the best phones in terms of these features.

6. Android: This website has a finder tool called Wayfinder that helps you find, filter, and compare Android phones based on their brand, price, camera, size, battery life, and more. You can answer a few questions and try the comparison tool to discover which Android phones are best for you.

All of these websites have their own unique features and tools to help you compare mobile phones. You can choose the one that suits your needs the best.