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Use a web FTP client to access files from an iPhone iOS devices
I keep a number of reference documents on a server at work that would be very handy to have access to on my iPhone while at work. The server is Windows 2003, and the iPhone does not provide an easy way to access shared files by ftp or smb. I was thinking about using something like AirSharing, but the files are changing and edited by more than one person, making sync a bit of an issue.

I thought about enabling IIS directory browsing, but this proved too limiting. Eventually, I came across a (free) project called net2FTP, which is a web-based FTP client. Using net2ftp requires that you can host FTP on your file server, and a webserver with PHP (either on the same server, or somewhere else). I installed Filezilla and net2FTP on the server, set up the FTP server to share out the directories I needed, and made some adjustments to net2FTP. net2ftp even includes a "mobile" skin (which you can set as the default) to work better with the iPhone.

Now the directories are password protected, and I can browse them from the iPhone, loading PDFs, excel, or whatever else the iPhone can read. I locked net2ftp so it would only access the local server, and only accept connections from our internal network (since I'm using the iphone over wifi in the office) to make it more secure.
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Empty iPhone Mail app's trash to regain file space iOS devices
I have six mail accounts that I check on with my iPhone, and for months, I've moved read e-mails to the Trash. What I forgot was that the trash needs to be cleared periodically. I regained a couple of hundred megabytes of space by cleaning all the accounts.

To empty the Trash you must enter each account, then enter the Trash and tap Edit. You are then given the option to Delete All. Select Delete All, then confirm the Delete All. A simple tip, but one that may free up a fair bit of space on your iPhone.
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Temporary CAPS Lock for iPhone/iPod touch iOS devices
Because the iPhone/iPod touch support multi-touch, here's a simple way to temporarily type in all caps: Hold one finger on Shift, and use another finger to type your word -- just as you would with a "real" keyboard.

[robg adds: While this may seem blatantly obvious to those who have adjusted to the world of multi-tap, I took a small survey -- OK, so it was me and the one other iPhone user I could find online at the time -- and discovered that 100% of the respondents hadn't used this method of temporarily typing in caps on their iPhones...so perhaps this will be useful to more than just the two of us.]
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Change the iPhone/iPod touch's Notes font iOS devices
First, go to Settings » General » Keyboard » International Keyboards, click into the Japanese keyboard, and enable the QWERTY keyboard.

Next, open Notes, and start typing a note. Click the globe icon next to the Space Bar to switch to Japanese, and type a character. When you do, the Notes font will change from Marker Felt to Helvetica. Here's a demonstration video.

[robg adds: This works, and the note will remain in Helvetica even after closing and reopening Notes. You can even delete the Japanese character you typed -- once the font has changed, it won't change back.]
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Join a wireless network with an non-typable password iOS devices
The WPA password for my employer's wireless network contains a backtick (`), which is currently not supported by any of my iPhone/iPod Touch keyboards (I'm using the latest firmware at the time of this writing, which is v2.1.1). This prevented me from synchronizing information over-the-air while at work.

The iPhone Configuration Utility, available on Apple's iPhone enterprise support page, lets you create wireless network configurations and send them to your iPhone or iPod Touch. However, it only contains a field for entering the SSID, not the network password. Thankfully, Apple's Enterprise Deployment Guide (740KB PDF) references a Password key that we can take advantage of to send the right password to your iPhone or iPod Touch.

This hint will require your iPod or iPhone to have some kind of wireless network access to begin with. But it also requires a Mac or PC, so perhaps you can set it up to share a wired internet connection over the air (more on that here).
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See all new iPhone/iPod touch apps by category iOS devices
Just like music and podcasts in the iTunes Store, you can use Browse mode in the iPhone/iPod touch App Store. You'll find a Browse link in the box at the top right of the App Store home page. Click it, and you'll see the typical iTunes Store three-pane browser. Click on App Store in the first column, then choose a Category in the second column to see a list of all apps within that category.

Because this view is list-based, without the fancy web interface, it's much faster (plus you see all entries in one long list, instead of 21 per page). The really nice thing, though, is that you can add your own columns to the list are. Control-click on the list header row, and select Release Date from the pop-up menu. You can then click on the Release Date header, and you've got a list of every app within the category, sorted by release date. Repeat the process and add Popularity, and you can sort by popularity instead.

This way you can sort the apps the way you like--just click the column header to sort the list by release date, popularity, developer, or even by price. This is a great way to get an overview of all the apps in the App Store.

[robg adds: I must admit I hadn't ever looked at the App Store's browse mode. Now that I have, using the web-like view really seems slow and clunky; browse mode is now my favorite method of digging through the App Store itself. Outside of the App Store, I rely on AppShopper (and its RSS feeds), which does a great job of tracking new apps (free, paid, or both), updated apps, and (most interestingly) price changes for existing apps.]
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Print to iPod touch/iPhone via FileMagnet and Automator iOS devices
A while back, this tip appeared, which I really appreciated a lot -- it made it possible for me to turn my mobile phone into a "digital paper." I use this hint daily for flight tickets, shopping lists, important emails, etc. on my mobile phone.

Recently I got an iPod Touch / iPhone. Today I also got the $6 program FileMagnet for my iPod Touch. This program allows me to do wireless transfer of files to my iPod Touch (or iPhone) and view files on my iPod Touch (or iPhone) -- amazing! This was just what I needed to turn the iPod touch into my digital paper. Alas, it involves a number of steps to get a print of a complicated webpage onto the iPod. Consider my electronic flight ticket that I've just bought: First I need to print this one as a PDF from the web page where it's generated, then I need to locate the PDF, then I have to drag-and-drop it into FileMagnet, and then wait for next sync with my iPhone. Finally, I have to delete the generated PDF on my Mac if I do not need this one. That's five steps.

Well, it can be automated easily. Simply make a custom Automator Workflow, which will be empty to start. Add Open Finder Items to the flow, and select FileMagnet as the application. Then save the workflow in /Library/PDF Services -- I called mine Print to iPod Touch.

Now you can print to to FileMagnet from any app using the PDF pop-up menu in the lower left of the Print dialog, and selecting Print to iPod Touch. The file is printed and transferred to FileMagnet where it waits for next sync. That's two steps, and at the same time, it works around the bugs that my iPod has showing complicated doc/ppt/xls files, as it's a PDF that's transferred. (There are no files to be deleted, as the "printed" item goes into /private/tmp, which the system empties once in a while...but if you wish, the original file can be located by clicking the magnifying glass next to the file name in FileMagnet.) You can print to other formats as well if you wish -- but PDF works really well for the iPod Touch/iPhone -- and it insures that the filename of the printed document makes sense without further scripting.

Perfect for my use -- and I think a lot of others can use this too, as this turns our iPods/iPhones into digital paper.
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Create PDFs formatted for easy iPhone reading iOS devices
I wanted to upload a copy of the book collection I keep in Delicious Library 1 to my iPhone. Since Delicious Library can't sync to the iPhone like it can to iPod (via the notes feature), I decided to print the collection to a PDF. I uploaded it with the AirSharing application, but I could just as well have emailed it to myself. I ended up with a multi-page PDF the required difficult scaling and dragging to read.

To make things easier, I did the following:
  1. In Page Setup, I created a page 3.5 inches wide by 300 inches long.
  2. After printing my library to the PDF, I opened the PDF on my Mac in Preview.
  3. I chose File » Save as, and saved a copy. I left the Format pop-up menu set to PDF, and set the Quartz Filter pop-up to Reduce File Size.
This gives a very readable single-column document that doesn't take up much space. I do wish I could get rid of more margin, but it's not a bad solution as is.
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Quickly update a note's modification date on the iPhone iOS devices
Even though the iPhone's Notes application is a bit featureless, I've found it very useful for everyday notes. Usually I need quick access to few of them (one or two notes) just for reading, but as I create a lot of notes each day, notes fall down the list, making it a bit difficult to find them after three or four days.

One obvious solution is to create a title (the first line text followed by a blank line) with plenty of *** or +++ symbols, to make my special notes stand out from others. The other solution I've found (together with the first one) is to edit the note each time I read it, so it goes to the top of the list. What I've found is that there is no need to actually change anything in the note -- you only need to enter Edit mode (tapping on the note so the keyboard is shown). Even if you do not type anything, when you exit Edit mode (tap the Done button), the note is saved and its modification date is updated.

This is not an overly advanced tip, but I've found it very useful to me.
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Easily share Cycorder videos off jailbroken iPhones iOS devices
We have a number of first-generation iPhones fully unlocked and jailbroken using Pwnage from the iPhone Dev Team. (The iPhone 3G is not currently software-unlockable with any degree of reliability.)

One of the challenges for both 'official' (installed from Apple's App Store) and 'unofficial' (using installer.app or Cydia) apps that create content (photos, videos, text etc) is how to share the content. One approach taken by several apps is to offer to send an attachment via email. While this is fine for text files and photos, it's not so appropriate for larger files like video. You could also install OpenSSH and use scp to get the files, but that involves opening up root access which I didn't want to do for users who are a bit less tech savvy.

Here's our particular problem and solution. I have installed the Cycorder app, which allows you to capture video, but relies on scp and a knowledge of where the files are to move files off of the phone. By a bit of experimentation, I have managed to change the location where Cycorder saves its files. By changing the save location, I can then share/delete videos using Air Sharing (an 'official' app from the App Store). The general technique could also be useful for other applications.
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