Technology is all about what's new and what's next—today's iPhone is just tomorrow's paperweight. What about the things that were "new" and "next" yesterday or the day before? We live in a time of so much change and progress that there's nostalgia for things that kinda still exist. Here are a few that, for better or worse, are fading fast.

Got any more dead innovations you want to lament or wish good riddance? Chances are Anna Jane covered them in her book, but until you pick up a copy, you might as well comment about it below.

Anna Jane Grossman is the author of Obsolete: An Encyclopedia of Once-Common Things Passing Us By (Abrams Image) and the creator of iamobsolete.net. Her writing has appeared in dozens of publications, including the New York Times, Salon.com, the Associated Press, Elle and the Huffington Post. She has a complicated relationship with technology, but she does have an eponymous website: AnnaJane.net. Follow her on Twitter at @AnnaJane. [ Photo of Anna Jane by Amber Marlow Blatt, from Hey Brooklyn]

Note: while data tethering is possible on each phone without any additional tethering plan, you'll want to be careful that you're not accidentally seeding a bunch of torrents or something when you're connected via your cellphone. While we're pretty sure you'll be OK doing standard surfing, we can't guarantee you won't get slapped with some charge, somehow.

So let's get started.

What You'll Need
• For G1: USB cable, Tetherbot App, Android SDK, Firefox
• For iPhone: iPhoneModem app, Jailbroken phone

G1 Tether
This guide is based on the instructions and Android app written by Graham Stewart. Many huzzahs to Graham for figuring out this easy tether setup. This one, however, is a SOCKS proxy instead of a true modem tether, so it's limited to Firefox browsing-you won't be able to use any other apps unless you can configure them to connect via a proxy yourself. We've tested with Firefox though, and it works great.

1. Go here on your G1's browser and install the Tetherbot app. If unknown sources are not enabled on your phone (under Settings -> Applications -> Unknown Sources) do that first.

2. Turn on USB Debugging under Settings -> Applications -> Development and connect your phone via USB.

3. Get your Android SDK set up. If you're on Windows, you'll need to download and install a driver.

4. On your phone, fire up the Tetherbot app and tap the "Start Socks" button.

5. Now, the SDK incantation. In a terminal window on Mac or a run window on Windows, navigate to the "tools" folder within your SDK directory and then type the following:

Mac:

./adb forward tcp:1080 tcp:1080

Windows:

adb forward tcp:1080 tcp:1080

6. Now, in Firefox, go to Options -> Advanced -> Network, and click to configure how Firefox connects to the Internet. In the window that pops up, choose "Manual proxy configuration" and clear out everything that might be there. Under SOCKS host, type "localhost" and change the port to 1080. Hit OK, and you should be in business. Easy right?

iPhone Tether
For this, you'll need to jailbreak your phone. All you need to know to do that can be found in this post on the iPhone Dev Blog. If you're running OS X, I STRONGLY recomment using Pwnage Tool instead of QuickPwn to manually create a jailbroken software image and install it via iTunes-I have yet to get QuickPwn to work with my phone, and I have no idea why.

One caveat: there are two iPhoneModem apps-one, found at iPhoneModem.de is free, and comes with a utility that makes tethering on a Mac easy. That's the tutorial we're following here. They claim it's possible to use on Windows, but there is no companion app and, unfortunately, no Windows instructions.

The other iPhoneModem is nagware ($10 to get rid of the nags), and does include a Windows config app, which we have not tested. If you're running windows, try that one, and let us know how it goes in the comments. There is also another method using an app called 3proxy that requires lots of manual configuration, but that one may also be worth a try. Update: Commenters are also recommending PDANet for Windows tethering, which is in Cydia as well.

1. Once you're jailbroken, open up Cydia and install the package called "iPhone Modem zsrelay" - you can find it by searching "modem." Also install OpenSSH - find it by searching "SSH." BossPrefs is also recommended, so you can make sure SSH is running.

2. Download the iPhoneModem.de helper app and run it, and go to "Settings..." under the little iPhone icon that just appeared in the status bar.

3. Fill in the following fields:

IP-Address of Mac: Leave the default value (192.168.100.1)
Password of Mac: Your admin password
WLAN Name: The name of the ad-hoc network that will be created - your choice
WLAN Password: It must be 13 characters-your choice as long as it's 13
SOCKS Port: Leave default (9999)
iPhone root Password: alpine (as long as you're running 2.x firmware)
iPhone Mac Address: Found under Settings - General - About - make sure you use the wi-fi MAC address.

4. Once your config is saved, go to "start connection" and follow the prompts. Your Mac will create an ad-hoc network, which you will then join with your iPhone (make sure you get an IP address on your iPhone before continuing). Everything should go smoothly, and voila, you're tethered!

Hope you enjoyed our how-to. For more on iPhone jailbreak apps, see yesterday's essentials list, and more how-to guides here. Enjoy the weekend!

Update: Having problems setting it up on my iPhone 3G. I follow the instructions and the phone seems to "connect", but that's about it. No connections shown in the NetShare app, and nothing goes through.

Update 2: Now we're getting the message that it's not available in the US store. Sucks.

This small and humble gadget (not to be confused with Shakira's breasts which, she says, you cannot confuse with mountains) supports more than one SIM card and will cost you $328. – Ad Dugdale

Product Page [Smart Devices Direct via Red Ferret]

With an ADSL 2+ mode, a router, a four-port 10/100 switch, a firewall and of course, draft 802.11n support, this device eliminates the need to have both a modem and a router to connect to your DSL service.

Press Release [Netgear]

Now hear this: Got a Verizon EV-DO phone or thinking of picking one up? It's not a bad idea, considering the company is getting ready to change its policy on using said phones as modems for laptops. All you need is a USB modem (not even Bluetooth required) and a Broadband Access data network and you're good to go. Though not a complete mystery to owners of the Blackberry 7130e, who have had this option since they bought their PDAs, you will have to upgrade you data plan to $60 a month. Phones that will have this new option include the LG VX9800 and VX8100 and the Motorola e815 and V3c.

Verizon To Allow Modem Use For EV-DO Handsets [phonescoop]