iPhone 3G

An iPhone is an iPod Touch (iTouch) with the phone and camera. Thus, an iPhone is already an iPod touch with more features.

The problem that you face is that there is a resistance derived from the contact and a resistance derived from he semiconducting material itself. The trick is to separate the two resistance values.

To do this you will need to set up a series of contacts. Each of the pairs of contacts will need to be separated by a different distance through the semiconducting material. I would suggest at least three pairs but the more you use the more accurate your contact measurement will be.

Use a Kelvin, or 4-point measurement technique. This is done by using, as the name suggests, four probes. with two probes apply a small but known current through the contact pairs and semiconductor. Using the other probes measure the voltage difference from one contact to the other. The voltage drop, and current flow will give you the resistance across the contact pair (Resistance = Volts / Current).

This gives you the resistance of two contacts and a resistance of a small amount of semiconductor. Now do this to all three different contact pairs with different spacings of semiconductor. Of course, the longer the semiconductor spacing the more the total resistance will be. If you plot these values as a line (using the spacings as an X-axis, resistance on the Y-axis), you will be able to extrapolate what the resistance would be if there were the theortical value of zero spacing, or no contribution from the semiconductor (the Y-intercept).

Now this is the value of two contacts so you will have to divide this value by 2. And it is also the value of the specific area of the contact you used. The larger the area the less the contact resistance. So Divide the contact resisance by the area. The typical units to report this number is in Ohms/cm^2 (ohms per centimeter squared).

By the way, this in theory could be done using less points, however you need to be aware that the linearity of your measurements is important. In practice the contacts (even good ones called 'Ohmic Contacts') are not perfect. Measuring at least three (I use five) pairs of contacts will give you a way to see if you are getting a good reading of the contact resistance. If you get a correlation coefficient, (R-squared available on an Excel spreadsheet), for your data to a best-fit line of 0.9 or better you are getting a 'reasonable' contact resistance measurement.

iPhones need a SIM card to work as a phone. If you don't have a SIM card you can use it as an iTouch.

You can update your iPhone 3G to iOS 4.2.1 (the latest the phone can handle) by plugging your phone into your iTunes authorized computer at home and waiting for the device to be recognized. Once it is, you will get a pop up that there is new software available for free. You agree to any terms and conditions and then just wait. Good luck!

You will have to connect it to your PC/Mac to activate it. When that has been done it'll allow you to access the menu.

go to set up

you cant it is a diffrent bank

Yes you can. Even though there are no holes on the phone for charms, you can use air plugs. This product not only allows you to put charms on your iPhone, but as the plug is inserted through the headphone jack, it blocks dust and moisture entering the jack space and from falsely triggering the water sensor at the bottom.

It also has a low profile design, so it looks clean and fits with practically any case you might have.

10-11 watts for an iphone 5. I found it in my science book!

"Every invisibleSHIELD purchase comes with a Lifetime Replacement Guarantee. Additionally, we offer a 1 Year Manufacturer Warranty on many of our products, and a 45 Day Money Back Guarantee on your purchases." You would have to pay for postage and handling, though.

3 months

iPhone 3G S = iPhone 3G + Extra's

A 16GB iPhone means it has 16 gigabytes of memory. It depends how much music you have as to how much room you need. I have an 8 GB and I had to delete a bunch of apps on my phone because my music library is too big. I'd say all the stuff on an iPhone, not including music, takes up about 3 GB. So you have 13 Gb left for music/movies.

PwnageTool 4.2

If i knew i would of find mine by now

i want to know the parrot v5.11c password

seri on a iphone is something that helps you

It depends on the company you have

Place the Pygmy on the drum then tap the sky to make fireworks he will then drum

No, they cannot.

If a teacher, principal, etc. takes your phone for a good reason, then they can keep it until the end of the year, if they'd like

It IS illegal to look through anyone's phone without permission on any circumstances. Your parents can do it, but that's only if they bought it, etc. and the school cannot charge money to get your phone back, I'm pretty sure that's illegal, too.

Answer: NOPE

just choose ur sms option in data card and send 'DATA 3G' to 53733.. u will receive balance as sms shortly.

Yes, depending on your state sales tax.

If it is wifi then no it does not use your credits.

it could if you use it all the time 24-7