Why don't we have an application where we can recover our data of BTC

[KingsDen]

How about the seed phrase? He did not backup the seed phrase somewhere like on paper?

One thing about phone password is that to brute force it is hard. After like 5 attempts, it may keep doubling the times needed to try another password.

He should backup the seed phrase on paper or on metal sheet like stainless steel or titanium next time.

He have his everything saved in that phone but the issue is that the device have some circuitry problem and the shopkeeper told him that we can't recover the phone while saving the data .
Although time has passed and he also doesn't know the password of that phone. He have saved every single detail in the notes on that phone.

How do you mean by everything saved in the phone, including the seed phrase... If you were talking about a computer, I'll say he saved the backups right in the computer, but for phone, he should be able to have written down the seed phrase somewhere else.

Op also mentioned that the victim has a job that earns him good money, so he might be reluctant of trying advices given here, especially if he is not bitcoin technical.
Otherwise, even NotATether shared two important links that could help...

[Patikno]

That's sad, there's no way to recover it and it's only through him. I'm not a recovery expert with the data from the phone but I think if it's doable with the ssd/hdd of PCs and laptops.

Maybe with the mobile devices, there can also be possibility that it can be recovered. But it's about knowing if the file was there or saved notes or logs where he has put those important things like the seed.

Yeah , he also lost his last hope but I am somehow trying to help him cuz he is dealing with a large amount according to our view because he worked so hard for that to collect and now he is very upset , But the good thing is that he is still doing a good job and earned double amount of that.

It is good to hear that positive news about your friend, as it means they still had another way to earn that amount of money.

In any case, your friend's story serves as an important lesson for anyone who hears it, including your friend; who gained a valuable insight from that unpleasant experience. The importance of backing up your wallet keys is the primary lesson here; you should also consider the importance of keeping your devices secure, so that you do not lose such critical data.

I often advise people to back up their wallets securely, specifically by storing them on devices offline; that not used for online activities. So, this could also prevent those unwanted things.

By the way, try listening to the advice from @moneystery, and @Charles-Tim; regarding recovery via eMMC; that might just be the solution your friend is looking for.

[Somegory]

I have a friend of mine who used to invest in BTC in 2016. He was using very low end device on that time , and succeeded to make money through the investment. But now he still invest in markets but he forgot the password of that mobile he used to use in 2016. He tried to recover it but everyone around him told him that we can recover the mobile but not the data.

If anyone know anything that could help him, don't forget to share it with us.

He still have that mobile with him but he isn't able to open it.

The only way to recover your data is through your Bitcoin wallet's recovery seed, if you friend failed to write it down then he doesn't know what he was doing or maybe he used a custodial wallet?

If he used a custodial wallet he won't get the recovery seed, the company that owns the custodial wallet have total control of the recovery seed for every users, this is why you must never go for any Custodial wallets.

Many crypto investors still don't understand that there is a different between custodial and non-custodial crypto wallets, if you want an operation close to the bank style then go custodial, if you want total control you must pick non-custodial wallet.

[macson]

Yeah , he also lost his last hope but I am somehow trying to help him cuz he is dealing with a large amount according to our view because he worked so hard for that to collect and now he is very upset , But the good thing is that he is still doing a good job and earned double amount of that.

If it's a low-end device, there's still a chance to recover the data as long as the memory part of the device isn't damaged. The question is whether it's worth it to recover it or not, because recovering data from a damaged device isn't cheap. But if he has already tried to let it go, then so be it. But in the future when Bitcoin prices are higher, he may regret not recovering it.