Have you tried Chrome Developers tool? Then you can set the device mode to mobile and throttle the speed to something like 4G / 3G to see how it compares.
Also you Google's PageSpeed to test some optimizations for mobile
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Ive buide a mobile ready site... After applying all the possible optimization its pretty fast and cache good. In desktop version i see no delay loading or site is not waiting too long to load. Howerver when i try in mobile phone it will load after 20-60 secs on the first load of site... then fast after the nexf succeeding request... Btw. Im only using VPS with 1mb memory in Digital Ocean. Any tools to find out what is taking my site to load this slow in mobile? This is a very Good topic to be talked about thanks
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