Quote from: littleOnesCoin on September 14, 2020, 11:50:18 PM

Bitcoin data increased to more than 250GB

there is no such thing as "bitcoin data". there is blockchain which is that big and you don't have to store it on your phone.

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which is too large to mobile phones or devices.

what can be done is to download, verify and discard. aka what pruned mode does as it was pointed out in another comment.

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So someone who want to receive coins from mobile devices have to depends on some specific websites.
Websites which tell the phone transactions are good or bad is centralized and controlled by big guys and this is the big risk for mobile users.

that is only one of many alternatives, and one of the worst ones.
the better alternative is using SPV protocol that is still decentralized and pretty safe to use without needing to rely on any website or even a server. the client connects to the bitcoin network and acquires any information it needs.

another option would be running your own node somewhere like on your home network and connecting your phone to that which means your storage requirements, traffic usage and security can increase a lot more than any other option. you could also encrypt your communication with a strong encryption between your PC and phone to increase your security even further.

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mobile bitcoin network
The excepted network like lightning web runs on bitcoins global network and maintain decentralized and verifiable network to enable mobile devices to verify transactions quickly.
This can greatly increase the actual users of Bitcoin!
This is especially meaningful when Bitcoin is becoming more centralized.

I would like to discuss detail plans with you!

do discuss it, you just mentioned an abstract idea with no details.