A few months ago, my phone stopped syncing contacts and messages (including missed-call and voice mail notices!) after I installed a new app. Email and text messages flooded in the moment I uninstalled it. At the time, I figured it could be the app, or it could simply be that the phone doesn’t sync if it’s low on space.

Now I know: It’s the lack of space.

Last night I updated Gesture Search, which pushed the phone into low-space territory. I figured I’d deal with it later. This morning, I noticed that it wasn’t reporting new messages on Gmail. Reluctant to uninstall any more apps, I followed Katie’s suggestion of clearing out old text messages…and freed up 1.5 MB. (I figure it’s the pictures. They’d better be worth 1,000 words, because they take up a lot more disk space.) A few seconds later, the @ popped into the notification bar.

You’d think that 7+ MB would be plenty of room to download email and text messages, or tell the notification system to pop up a new icon. As near as I can tell, though, if the “Low on Space” icon is visible, Android won’t sync anything.

Next time, I’ll make a point of cleaning things up quickly.

With luck, this won’t be a problem with my next phone. (Yeah, I’m still on the G1.) Whether I go for a Samsung Vibrant, a G2, or something else, it should have more storage on the phone and the ability to install apps to the SD card.

I’ve always wondered how the name of Japan’s currency ended up meaning “craving” or desire in English. It turns out to be coincidence, probably from the Chinese yáhn or yin, “craving.” Word of the Day: yen.

TweetUp acquires Twidroid and changes its name to Twidroyd “to ensure minimal confusion with products from Lucas Films.” Fortunately no one will mistake Lucas Films for Lucasfilm

Last month, KTLA reported on a 3.3 earthquake in the Inland Empire. “Dozens of residents” in the region felt it. Dozens! Wow!

I have to agree with @rzazueta: Woot’s Amazon buyout report is an instant classic (via @boingboing)

Chart of the Day presents: What people are actually doing with their cellphones (aside from talking) based on a Pew survey on mobile internet use. (via @ThisIsTrue)

If you went out to the movies in the US during 2009, there’s a good chance you saw a turn-off-your-phone PSA in which a movie about “robots from space” tries to negotiate blowing up Mount Rushmore.

In a case of life imitating art, the National Park Service is currently battling Transformers 3 — a movie about robots from space — over just what they can and can’t do with a national monument!

Okay, you can’t blow up a national monument, but…

Bill Line, Park Service spokesman, said the producers “have asked to do some things that simply are not done on the National Mall,” among them staging a “car race” along the Mall’s gravel paths and flooding it with artificial light in order to shoot at night.

Apparently it’s not unique to Transformers 3, but a fairly frequent battle between the park service and film producers, which means Sprint’s video isn’t just a funny story, but a bit of an in-joke to those familiar with the industry.

Hmm, any chance the new movie will have a chorus singing “Robots from space!” in the background?

Sometime last week I noticed that I hadn’t received some alerts sent by text message to my phone. I figured it was probably a transient problem with the email-to-SMS gateway and didn’t think much more of it. Then on Sunday I added a contact to my address book in Gmail, and it still hadn’t synced to my phone a half-hour later. Again, I figured it was just a hiccup.

Yesterday, some more email-to-SMS texts vanished into the ether. I figured something must be up with the gateway, so I changed the alerts so that they would also send to my Gmail account, figuring that if the text messages failed, I’d still get a notice.

They didn’t show up either.

That’s when I realized that nothing on the phone was actually syncing: Not Gmail, not the contacts, not the calendar…and it just wasn’t receiving text messages at all.

I tried turning sync off and back on, manually syncing, restarting the phone (both a hard reset cycling the power and a soft reset, sort of the Ctrl-Alt-Delete equivalent using the green, red and menu buttons together), even clearing all the local data for Gmail, Gmail storage, and Calendar storage.

Well, none of that worked. It marked all the apps for syncing, but wouldn’t actually start.

So it was time to backtrack: What had I changed recently?

Well, I’d updated several apps. Off the top of my head I could think of Twidroid Pro and the Weather Channel, but I couldn’t remember what else.

I’d also installed a new app, Layar, an augmented reality app which I’d seen in an ad for some other phone last week, but hadn’t actually gotten around to trying out. Adding it triggered a low space warning, but the phone still had 6.8 MB free, which ought to have been plenty.

Curiously enough, the last successful sync was right around the time that I installed Layar. Hmm…

Okay, what the heck. I uninstalled it. Within seconds, the phone bleeped and picked up the test messages I’d sent to Gmail. Within a minute, several text messages arrived, including my test from this morning and two alerts from last night.

Well, that was certainly suspicious.

So I installed it again, and this time actually opened the app to try it out (making it display the location of pizza places as seen from my desk), and sent myself a test message at Gmail. I can’t say I was surprised when the test message showed up on my desktop, but not on my phone, even when I manually refreshed my inbox in Gmail. Within a minute of uninstalling the app again, the message showed up.

So, no Layar for me. I don’t know if it doesn’t work with the G1, with Android 1.6, or with something else I have on the phone…or if it’s not Layar at all, and the phone just needs more space to sync.

The message is clear, though: If your phone stops syncing, or stops receiving text messages, look at what’s changed. There’s a good chance that the problem is related.

Update: It’s been about half an hour, and the voice mail notice just popped up…for a couple of messages I received on Sunday! It looks like the problem was blocking everything that used the standard sync/notify system on the phone. Twidroid was working, so I guess it must use its own system.

Update 2: I’ve confirmed that it’s just the low space, not the particular app, that causes the problem.

Android and Me is reporting that all Android phones in the U.S. will get Android 2.1 updates — even the G1 — but that they may be missing some features and some models will need to be wiped as part of the installation.

That makes sense, because it would allow developers to reassign some of the space set aside for over-the-air updates and use it for a larger system instead — and maybe more space for apps.

The possibility that the G1 was headed for obsolescence before my 2-year contract was up didn’t bother me much at first, but I’ve watched as even Google has released high-profile apps that required Android 2. Sure, I doubt the hardware can handle Google Earth, and Buzz turned out to be a dud, but they’re signs that Android 1.6 isn’t going to cut it for much longer.

If it does require a wipe and re-install, I can deal with that. A lot of the key data is either synced with the cloud or stored on the SD card. With luck, T-Mobile and HTC will build a decent backup and restore into the process and I won’t have to reinstall all my apps, bookmarks, etc.

Update August 2010: This is looking less and less likely as time goes on.