With iOS 6, you can now add different signatures for different e-mail accounts, but you can also add logos, links and styled text.

If you have an HTML or styled signature in Mail on OS X, do the following:

1. Send an e-mail to your account with the signature from OS X.
2. Open the e-mail on your iOS device, then tap and hold the signature text.
3. Select all the text and images of your signature, and then copy it.
4. Go to Settings > Mail, contacts and Calendars > Signature. In the text field, tap and hold again to display the Paste menu and paste your signature.

Only styled text (bold, italic or underlined), plus images and links will be copied. Text colors or font sizes will not.

[kirkmc adds: We had a hint giving a much more complex way of doing this back in April. This is very easy to do, requires no third-party software or futzing around with backups. Though, to be fair, think carefully if you really need images and logos in your e-mail signature…]

I've recently needed to fill in an e-mail address in Safari on my iPad for a number of sites. I have multiple e-mail addresses and they're not trivial to type. I kept thinking "why doesn't Safari let me pick one of my addresses to fill in here?" While I couldn't find a way to make that happen, I realized I could do this by creating shortcuts for my commonly used email addresses and get a very similar result.

To do this, go to Settings > General > Keyboard > Shortcuts. Tap on Add New Shortcut, enter a "phrase" - this can be a single word, an e-mail address or a longer text - then enter a shortcut. For example, to enter myname@example.com, enter a shortcut such as "myn."

[kirkmc adds: I've been using shortcuts for some user names that aren't e-mail addresses, since I generally use the same address on most websites, but this is a good way of easily entering any kind of text. If you don't know about them, you should.

One interesting thing to point out: shortcuts sync across devices via iCloud, as long as you have Documents & Data syncing turned on in the iCloud settings. So set up a bunch of shortcuts on one device and they'll propagate to others.]

Following yesterday's hint about fixing an iOS device that wouldn't launch third-party apps, I realized that it would be useful to back up my iPhone via iCloud, in case I have a problem away from home. I looked around, and saw that we don't have anything about this on the site, so I thought I'd write a brief primer.

You can turn on iCloud backups in iTunes: connect your iOS device, then, on the Summary tab, in the Backups section, click on Back Up to iCloud. However, when you sync your device, it won't back up to iCloud. The only away for this to happen is, according to Apple, when a device is connected to the Internet via Wi-Fi, connected to a power source, and has its screen locked. And, this only happens once a day.

However, you can force a first iCloud backup on the device by going to Settings > iCloud > Storage & Backup, then tapping on Back Up Now. (You can also turn on or off iCloud backups here; this has the same effect as the iTunes setting.)

It's worth noting exactly what gets backed up to iCloud. Apple has a technical document explaining this in detail. Note that iCloud backups don't back up content synced via iTunes: music, movies and TV shows not purchased from the iTunes store; podcasts; audiobooks; and photos synced from your Mac. However, any purchased content is backed up (technically, it's just a list of the content), and this content isn't counted against your iCloud storage quota. What will take up the most space in your iCloud backup is photos and videos on your device, so if you're tight on space, think of downloading these to your computer, or uploading them to some other storage service.

I was recently stymied by my iPhone 3GS that refused to launch any third-party apps. I would open an app, the start screen of that app would flash, and then I would be dropped back to the home screen as if the app crashed.

Due to extenuating circumstances, I was unable to restore from a backup. Also, I wasn't at my usual computer that manages my iPhone, so there was the fear that I would lose all my non-iTunes Store acquired music, apps, etc. And to top it all off, iCloud restoration was not an option as I'm still running iOS 4.x.

Before I stumbled on the solution, I believed the only option available to me was to wipe my phone and reload iOS from scratch.

You can try the following steps to restore launching of third-party apps:

1. Download any free app to your iOS device (you can delete it later). Third-party apps should now open. If not, continue with the following:

2. Connect your iOS device to a Mac or PC with an empty iTunes library on it (if necessary, use option when opening iTunes to force a new library location, or create a new user account with an empty library).

If you need to restore functionality and you're not at your usual computer, make sure you first go to iTunes preferences, click on Devices and select Prevent iPods, iPhones, and iPads from syncing automatically. Note: Make sure you do not allow iTunes to sync your iOS device to any different copy of iTunes, as you will lose all your iPhone's contacts, notes, apps, music, etc.!

3. In the iTunes source list, right-click your iOS device and select Transfer Purchases from [your device name].

4. Let it transfer all your purchased music and downloaded apps to iTunes. (You may need to sign into iTunes.)

After iTunes transfers your purchases, try to open a third-party app. If it still doesn't work, try opening an app after each step of the following:

5. Right-click your iOS device and select Backup (note that this is different than sync).

6. Reboot your iDevice

Hopefully these steps will save someone a lengthy troubleshooting session to get their apps working! Thanks goes to Alvin Alexander at devdaily.com for providing step 1.

PS: If you perform step 5 on someone else's computer, make sure you use secure delete on the backup files once you've finished. On Macs, the backup is located ~/Library/Application Support/MobileSync/Backup/ and on Windows it's located C:UsersuserAppDataRoamingApple ComputerMobileSyncBackup.

[kirkmc adds: Fortunately, I'm unable to test this, bit it makes sense. It's worth posting in case it might help someone resolve a similar problem. Naturally, the best way to solve this is to simply restore the device, but if, like the poster, the computer than syncs with your iOS device isn't available, this is a good option. Or iCloud backups, if your device is compatible with that feature.]

The regular panorama feature on the iPhone 4S and 5 under iOS6 let's you take panoramas from left to right, but a simple tap allows right to left panning.

While in panorama mode, just tap the white arrow in the center of the screen to change pan directions. To swap back, tap the arrow again.

Does your iPhone constantly defer to 3G or 4G, even when you are standing right next to your Wi-Fi router?

I recently discovered that the two iPhones (a 3GS and a 4S) in my household were both deferring to using 3G and 4G instead of using Wi-Fi. All the other devices (two laptops, one iPad 2, and two Direct TV boxes) were doing just fine.

I looked all through many tutorials online and tried a number of weird tricks and resets and was getting pretty flustered about it. Then I looked into why it would be affecting out phones and not our other devices and found this:

Pre-iPhone 5 models do NOT support the newer 5GHz Wi-Fi spectrum. All the other devices in my house, including the iPad2, DO support the 5GHz Wi-Fi spectrum. This means that the only devices using the 2.4GHz range on my router were the two iPhones.

I logged into my router's control panel to have a look at the 2.4GHz settings. At first I was considering changing its security settings from WPA2 to WPA Enterprise, but first I decide to try something simpler. I changed the 2.4GHz channel setting from "Auto" to a dedicated channel, and everything was back to normal.

I wish I could provide an explanation for why this worked. It seems there are many of people having this issue. I hope this helps you if you are.

[kirkmc adds: It is entirely possible that there was interference from other people's routers on the channel you were using. By changing the channel, you found one that is less encumbered. But this is certainly something to try if you are having Wi-Fi connection problems, and not just with an iPhone

5GHz is not really "new," it's just not been supported by mobile devices for very long. I've had a 5GHz network in my home for a few years, even though, for a long time, only my Macs would connect to it.]

It is now possible to have Find My Friends app send notifications to e-mail addresses.

I like the Find My Friends app, which allows you to see where your friends are located (if they allow you to). With the latest version, in iOS 6, you now have the option to be notified when a friend leaves or arrives at a location.

But you can also set up notifications for yourself, to notify others where you are currently, as well as when you leave or arrive at a location. Additionally, you can send an e-mail automatically when you arrive or leave a location, or send an e-mail showing someone where you are currently

To do this, open Find My Friends, tap Me, then Notify. You can now tap either Immediately, to send an e-mail right away, or At a Location, to send an e-mail when you get to that location. Tap on the To field to enter an e-mail address. If you choose an Apple ID for a friend who has the Find My Friends app, they'll get a notification on their iOS device. But if you enter a different e-mail address - such as one for someone who doesn't have the app, or an iPhone - an e-mail message will be sent. This is nicely formatted, and contains a small map (using Google maps) showing your location.

So if you need to tell someone where you are, and they don't have an iOS device or the Find My Friends app, this e-mail can be a big help.

With iOS 6, you can choose to limit (though not entirely disable) ad tracking, by digging deep into settings. Go to Settings > General > About, then scroll down to the bottom and top on Advertising, then toggle Limit Ad Tracking to On.

There's a tiny Learn More link at the bottom of that screen, which explains that this uses a "non-permanent, non-personal, device identifier, that apps will use to give you more control over advertisers' ability to use tracking methods."

[kirkmc adds: I'm not entirely sure how effective it will be, as it's still in its infancy. But it can't hurt.]

Yesterday, I discovered that, when I asked Siri for the temperature on my iPad, it would always tell me the temperature in fahrenheit, even though I am in France, and my time zone is set as such. (There is no real country setting on iOS.) On my iPhone, however, I would get the temperature in centigrade, as expected. A friend suggested that this is because I had set C in the Weather app on the iPhone. As there is no Weather app on the iPad (I still don't know why), there's no place to make this change.

Fortunately, a commenter to the blog post I linked to above pointed out that there is, indeed, a way to set the temperature, but it is well hidden. Open Clock, tap on Edit, and you'll see two buttons at the bottom of the clock list, one for F and the other for C. It seems that the only reason this setting is here is because the clocks can show time and temperatures. But unless you live in a major city - one for which you can choose a clock - the temperatures here aren't much use.

In iOS 6, Siri is smart enough to open your apps for you. Just speak the command "Open Mail," and Mail will open. This works for built-in and downloaded apps.

[kirkmc adds: It's about time, frankly. I've been extremely disappointed in Siri; it hardly ever works for me. I hope this works, because this will save time when I want to open an app that's not on my home screen, or buried in a folder.]