There are many web wallets where you can store your bitcoin and use their mobile app to keep an eye on your bitcoins some of them are blockchain.info mobile wallet, electrum mobile wallet, coinbase etc.

But title on your thread and Opening post have different question. What actually you want?

There is no doubt that bitcoin will be the digital currency of future and it has already been accepted by big merchants nothing to worry about. Also i think circle stop supporting bitcoin buy/sell to start their own centralized payment gateway like paypal to make more profit from heavy transaction fees and all types of hidden fees which they can't make with bitcoin.

We will not see cashless world in next few decades for sure, not even in well developed countries because government also use anonymity of cash to fund projects which they don't like to reveal to public. Also it is quite hard to digitize whole economy because of possible data breach so there will be always some cash backing up those digital cash system.

Like gold bitcoin can also be traded directly as cash without need to exchange bitcoin to fiat and than purchase something and lets not worry about fully digitize economy because bitcoin is already a form of electronic payment so it doesn't require to be exchanged to cash. In future you may be able to buy anything with bitcoin over POS machine.

I think you are quite scared about bitcoin price dump in future but for a big dump in bitcoin price there need to be some reason, so if you keep close eye on all bitcoin related updates daily you don't have to worry about losing rather holding bitcoin can make your profit. For example look at the price of bitcoin few months ago and now, that is huge growth.

But if you don't like to sleep with fear, you can diversify your holding to like USD, Bitcoin and Gold/Silver.

I will not be surprised if price surpass $800 by end of this month or even earlier. Also this price rise seem steady one rather than sudden surge. This uptrend seems promising...

I am also expecting some movement but not that high like $900+, if there will be another small pump it may take price to well above $800 making $800 floor for next year.

Very nice review video, i have heard about keepkey as an alternative hardware wallet to trezor. It has really nice userinterface on device too, just checked their site but they seem to have flat shipping fee
Almost half the price of device 

Oh really? I think you are talking about this https://yobit.net/en/trade/PAK/BTC
And it seems there is not much trading volume and price is just near 150 satoshi not at 250 satoshi.

Never heard about both PAK and TAM before. Both seem dead coin with no trading volume.

It require some time for people to shift towards segwit and start supporting it, but sooner or later i think segwit gonna activated. Price is already booming so no need to worry about price dump for now. We will see steady growth which is better than sudden pump.

On video description
I don't think this is correct, anything under $700 was good price before and now price is still under $800 so buying at current price is also good. Anything under $1000 can be considered as good price because i am quite sure price will hit $1000+ by next year.

If you can spend few hundred dollar for hardware wallet like trezor than yes it is safe cold storage method. But if you can't pay for hardware wallets, i think paper wallet can also work as cold storage and if you can keep it safe and out of internet it can provide same level of protection like hardware wallets.

Edit: Typos

Like gold bitcoin are not subject to risk of loss or getting theft so why would anybody like to store their bitcoin in banks vault?
Also there will be nothing that can stop banks from issuing more certificates than the actual amount of bitcoin they have in their wallets.

Better solution for offline transaction could be bitcoin paper wallet rather than those certificates. However your idea seems quite complicated and even harder to implement.

Sounds good to deposit with bitcoin but should i need to have some balance to even see available number?

I can't select phone number and also will you be adding more countries in future?

Also when bitcoin payment will be added

If you are renting your mining rig than you don't need to worry about losing all like investing in cloud mining package even if they run away. Wait till next week and if they don't pay you you can shift towards miningrigrentals i think they are good alternative for nicehash but i have only used miningrigrentals to rent some hashpower for mining alts in past.

I am always long on bitcoin, people used to say its good to buy all bitcoin under $700 few months ago and now any price under $800 is good. Next year it will be anything under $1000 will be good price to enter and obviously price will keep hitting new ATH frequently in coming years. So better to hold and buy more that you can afford to buy. 

It will be nice if price can get to $2000 by this February but there is no any logical reason behind to support this speculation. Price is steady at end of this year and also correction on price seems not that high so  we may see nice growth in price next year.

Yes there are millions of bitcoin in satoshi's known bitcoin addresses but nobody can actually say how much bitcoin satoshi have premined on early days. But it is really high along with other early miners, and none of those bitcoin have ever moved from those bitcoin addresses satoshi own.

How much you have sent him 10$? It seems 10$ was enough for OP to run away, yeah if your paypal account is older and have lots of previous transaction than chargeback may come to your favor. I have also gone through such situation few months back, with $20 worth of bitcoin but i successfully got back my paypal from that scammer.

I have voted for bustabit really loved their game and also won nice amount early this month so for this month i am voting bustabit.  
ALthough directbet.eu is always my favorite for sports betting.

So did you get back your bitcoin?

It seems they are going with maintainance and those problems you had before may be one of the problem they are trying to fix now

Got this  https://www.satoshidice.com/?stage=2