For internet, either use a WiFi tethering hotspot or a phone that does that.
ABOUT FLYING:
The reason you should not use a phone why flying are many.
Firstly cell phones were banned in 1991 on FCC initiative in USA. The reason was a probable interference of cell phone with the aircraft's communication and navigation systems. But at that time there were no facts that can prove or disprove that statement. The ban could be considered as a private initiative of airlines and telecommunications companies, which didn't want to lose a revenue from the air-phones installed onboard. Look, a one-minute call in the air was much more expensive than a usual cell phone call and, naturally, people used a cheaper service when they had a choice. The situation was regulated in 1991. Ground carriers had no objections. But we should understand that cellular technologies were not widely spread at that time and revenue of carriers was quite sufficient. It wasn't necessary for them to find other sources to get benefit.
However, later, evidences that cell phones interfere with airplane equipment appeared. Such companies as Delta, United and Continental proclaimed that sometimes mobile phones really interfere with compasses and even cabin pressure. Specialist in equipment negatively took this announcement and in 1996 U.S. Federal Aviation Administration asked nonprofit organization to research this problem. As a result of their study was an article, where the specialists said that cell phones didn't operate on airplane systems. They also confirmed that all the bans shouldn't be repealed because theoretically such interference could take place. Similar tests were made by airplane manufacturers (Boeing Co.and Airbus Industrie) and the results were also negative. The absence of evidences allows many countries not to restrict passengers to use mobile phones onboard.
First alarm was set when cell phones became widely spread and equipment errors became more often but still there were no direct evidences. Till 2000 some of the countries didn't joint to the ban against cell phones but an air crash of the flight number LX 498 Crossair (Saab 340) considerably changed the situation. It was not far from Zurich on the 10. of January 2000. Ten passengers and a whole crew perished in that air crash. For a long time the results of flight recorders decoding were not announced but at last it was a sensation. One of the reasons of the crash was an SMS message, which was received by one of the passengers, and a next cell phone conversation. Navigation monitoring devices showed wrong data at that moment, what led to a crash. Comments of independent experts were not comforting, they said that crew could improve the situation but it also made a mistake and crash was inevitable. Everybody agreed that an airplane fortune depended on crew actions and crew professionalism after electrical systems stopped working. Those countries which hadn't joint to the ban before, hurried on to do it. After that this air crash was forgotten.
Read more: Why can't you use a cell phone on an airplane? | Answerbag
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As long as you're willing to pay for it, you can now do pretty much whatever you want on an airplane: Hop on Wi-Fi, watch movies, play videogames, and in some first-class cabins you can even, ahem, recline with a friend. So why can't you use a cell phone? Despite what fear-mongering flight attendants say, making a call probably won't send your plane on a collision course with a tropical island populated by smoke monsters and Evangeline Lilly.
Sure, your mobile can interfere with avionics in theory. But in practice, it's far from likely. Cockpits and communications systems have been protected against electromagnetic meddling through safeguards like shielded wiring and support structures since the 1960s.
So why the resistance? Part of it, naturally, comes from the call carriers. When phones ping for signals at 35,000 feet, they can hit hundreds of towers at once, necessitating complicated parsing of roaming agreements. Providers don't want the hassle if they're not being properly compensated, so the government has left the plane ban in place.
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Could something as harmless as a phone call actually crash a plane? Or is the pre-flight announcement to please turn off all portable electronic devices simply to create a sense of calm and focus for the passengers as a glistening hundred-ton hunk of metal implausibly takes off into the air?
With wireless Internet now making its way onto many flights, couldnt you technically call someone using Skype? Would anyone stop you?
There are two regulatory agencies in the U.S. who have jurisdiction over cell phones on planes. They each have independent, unrelated rules about them.
The Federal Communications Commission controller of the nations airwaves bans cell phones on planes to protect cell phone towers. They simply arent designed to handle calls from phones traveling tens of thousands of feet in the air at hundreds of miles an hour. Traveling through the air, your phone can contact many towers at once, confusing the networks and reducing their capacity. So the FCC ban is intended to protect the wireless cellular phone infrastructure.
The Federal Aviation Administration which regulates flight safety has safety concerns about cell phones. Because of this, they have rules against their use during takeoff and landing. Its because of electronic interference. Cell phone interference could cause the pilot to lose contact with ground control or knock the plane off course. While the chance of this is low, the potential consequences are grave enough for the FAA to maintain a ban on all electronic devices during takeoff and landing.
If it saves one crash every decade, its worth doing, said retired NASA astronaut Jay Apt. Still an active pilot, Apt was involved in a review of cell phone related safety incidents reported by pilots to the FAA. During the review the committee found cases of cell phones interfering with an airplanes Global Positioning System, which is used for navigation. Because the GPS satellites are far away, its easy to lose their signal. Its like trying to hear someone whispering in the middle of a crowded football stadium, Apt explained.
Using your cell phone on a plane is a little like yelling right next to the person trying to hear the whisper in the stadium.
All electronic devices emit electromagnetic energy. Requiring them to be turned off during takeoff and landing is like asking everyone in the crowded stadium to be quiet.
While all electronic devices can interfere with aircraft equipment, cell phones pose a particular risk because they are active emitters they transmit electromagnetic energy long distances to cell phone towers miles away.
The FCC assigns cell phones their own frequency channel to ensure they wont interfere with things like radio stations. Phones should only emit at the channel they are assigned, but energy can leak to others like those that airplanes use to communicate with air traffic controllers or for navigation.
Surprisingly, the FAA has no specific ban on cell phones once planes reach cruising altitude. Instead, they leave it up to the individual airliners to determine if they are safe, according to a 2006 advisory. Safe or not, the FCC regulations prohibiting cell phone use on planes still holds.
Even without the FCC ban, most commercial airliners would probably err on the safe side and prohibit use of cell phones when the wheels are up. Conducting more research on how cell phones affect airplane operation would be expensive and time-consuming, so its easier to just keep the ban.
Besides, nobody is really complaining about the quiet atmosphere.
New technology may soon change the social landscape of the airplane, however. Picocells, which can be installed on planes to act as miniature cell phone towers, route phone calls to terrestrial systems via satellite link. This means customers can use their own cell phones for the price of an international call. Airliners in other countries, such as Lufthansa, Air Asia and Ryan Air, have already started offering this service on some flights.
In-flight cell phone technology is similar to the in-flight wireless Internet service already provided on Continental, United, American and Delta flights by Aircell, a company based in Itasca, Ill.
While the U.S. has embraced wireless Internet on planes, there is still a lot of resistance to cell phones. Says Aircell spokesperson Brenda Chroniak, its because of passenger aversion to the idea of many people talking loudly on flights.
In fact, a passenger could place a call from a plane via the Internet with a service like Skype. Chroniak says they block that capability at the request of the airliners. However, there dont seem to be any FCC or FAA rules against it just a general consensus that it would be unbearably annoying.
Rep. Peter Defazio, D-Ore., is so passionate about the issue he is sponsoring a bill to ban cell phones on planes called Halting Airplane Noise to Give Us Peace Act or HANG UP.
For astronaut Apt, lifting the cell phone restriction would be another nail in the coffin of civilized air travel.
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Now I'm going to say two things. I've flown Cessnas before. From what I've experienced, I would let people use phones on a plane i was flying, but only below a few thousand feet. Lets say below 5000 feet it would be ok. But, the higher the flight is, the more towers the device tries to connect to. Also, it uses up battery faster and emits more radiation. Now with something like an older plane with steam gauge instruments, a cell phone would not interfere with anything. But on a modern plane with GPS, satellite weather, satellite link to HQ, electronic navigation and autopilot-- it would be a problem. In the end, it's mostly a problem of better safe than sorry. Most planes fly too high for any safe use of a cellphone. I do know that my father said that on a few private jets he was on (he used to work for large companies and fly a LOT), the pilot would let them use phones, etc. But then again, a private jet and a 747 are two different things.
So, enough rambling.
Don't use your cellular device on a plane. The FAA and the pilot knows best. It's not like you are going to get just fined if you get caught-- you could even cause the plane to crash. Be on the safe side and listen to the flight attendants. That could save your life someday!