Nokia 1520 Usability

Question

Hi,
I have been using Nokia 1520, Nokia Lumina Black Edition Windows Phone 8 for about 2 month, I find the phone really lack of basic functionality. Compare to Android and iOS.
Does anyone know where Bluetooth Shared File Store on Windows Phone 8?
I've been scratching my head about this one, no file manager so where does the Bluetooth shared files(pdf) store ?, Tried the Office Hub Icon (It is not in the document folder). 
I have also notice that you only have one chance (and I must said one chance) to open with an appropriate app.
If you missed that chance, you can't find it (even it is already downloaded).
For example:
After the file finish downloaded onto Nokia 1520, you'll see a message tap to view done ... on top of the screen, you need to choose the appropriate app to open it.
Problems:
1. When a file finish transfer my phone go into powersaving mode (or lock screen), I then tap on the message while I am on the Lock screen (That it I have lost the opportunity to find my file) - (Once Chance).
2. You can send multiple file, but you can only tap once on the message (One Chance)
My annoying work around is to re-send the file (That mean there is another copy somewhere that use up my phone storage).
Another mind bloggling thing about Bluetooth Connection, I've seen question in the forum about bluetooth connection.
After the phone is paired with PC (You click on connect, it would connect for a few second and then disconnect, I was always under the impression that it mean the bluetooth is not working when it was disconnected after a few second).
From what I have understand so far is, Bluetooth connection only stay connect during file share and then disconnect. 
I think if this is by design, then Nokia should documented some where that it is not mean to stay connected.
Can't Open PDF Link
When visit site that does not return file type of pdf (you have no way of open/download the document) as it is become unsupported document type event if you surf the Store.
Can't Easily Share file between program.
Let said if I have a pdf document on the phone, I want to open up in different PDF Reader Program. I have to put into the Document Folder for Office Hub to recognize then I can select which Program to Open With (No setting for Default Program - you have to select every single time).
Each Program that you open with seem to get a copy of this same file.
Viewing Multiple Account in 1 Mail Program
(This really need to have it own topic, since it have so many gotcha).
1. Linked Mail (Not obvious, someone in this forum was able to point me to this functionality) to allow viewing multiple mail account from 1 program (but this have it own limitation - you can't distinct which account the email is coming from unless you open the email and find there is a small text with the account name).
2. When you are creating a Draft email and you switch to another app, how do you switch back to your draft. You have to Tap and Hold on the Back Key (<-) then find the draft email that you are currently composing.
3. How do you find the sent folder for the mail account?
You have to Tap on ... Then select folders ( Not as simple as Android or iOS, just swipe/tap a button to show all the folder).
Viewing Video File
1. There is no option to lock the key, alot of time I accidentally tapped to the next section of the movies.
2. No easy access to the volumn control on screen when play back the movie.
PDF Viewer.
I am still waiting for a Good PDF Reader (With basic functionality, Highlight, Adding Bookmark).
I have try Acrobat Reader (But look like no one interested in improving it, the program is not optimized for Nokia 1520, therefore text is not very clear, I have raise the issue but no response).
I have sent the feed back to Microsoft regarding the default PDF Reader (Can't add bookmark, No Highlight), but no response. I guess, I am only a small fish in the pond.
ePub Viewer.
I am not sure is it me or what, most of the ePub Reader is Line Justified which leave a big gap between the text and it really annoy me, but no setting to turn this off.
Regards Dat.

Answer 1

And add up A) Oversensitive screen that doesn't allow you to type properly B) Lack of Traditional Chinese with Pinyin insertion (been asked first in 2011) C) Lack of consistency in when it allows you to select one single word or position the cursor accurately VS selecting whole words (It's OS selected not like Android that allows you to do what you want) D) Terrible support both online and in person (In Taipei i had a terrible experience) E) Free gift vouchers that you can't use because either your email or your current location DO NOT MATCH the gift card. In short it sucks 360°