General Packet Radio Service (GPRS) is a technology that allows your phone to transfer data at moderate speeds.
The Benefits of GPRS
GPRS lets you send data faster than over a GSM data network, and it's also a lot more efficient. But "data" sounds pretty vague, right?
What You Can Do With GPRS
- Connect to your office or personal email account to get email as it arrives
- Browse the Internet on your phone
- Synchronize your phone and office calendar while you're out of town
- Download ringing tones, graphics, and games
- Play online games (one example of this is the N-Gage™ Arena)
- Send and receive MMS messages
- Use your phone as a modem to connect your laptop to the Internet
- Subscribe to mobile services that bring you personalized information like sports updates, breaking news, horoscopes, share prices, the daily trip-hop-country single...
- Use Java™-based applications that require a network connection
- Chat using instant messaging on your phone
- Update your friends' Presence status
- Transfer data up to three times faster with an EGPRS (Enhanced GPRS) phone
GPRS is better than a GSM connection for data that's transferred in larger "chunks." And unlike voice calls and dial-up Internet connections, you pay for how much you transfer, not for how long you're connected. You can have an active GPRS connection all the time if you like, which is nice if you need to synchronize periodically with a network or if you're expecting an important email.
How GPRS Works
To use GPRS, you need a phone that supports it, a subscription from your network operator that supports GPRS, and the proper settings.
General Packet Radio Service does what it says: it sends "packets" of data over a radio wave (on the GSM network). Packet switching works like a jigsaw puzzle: your data is split into many pieces, then sent over the network and reassembled at the other end. GPRS is just one of the ways to transport these jigsaw puzzles.
When you talk on a mobile phone, a continuous connection to a channel is reserved for you on the GSM network, which means nobody else can use that channel. With GPRS, you can still have a continuous connection, but you only use the channel when you're sending data.
So, you might be connected to a channel all the time, but you only actually use it when you're sending data. One channel can be shared by many people. This is why you're billed for data transferred, not for time.
GPRS is significantly faster than CSD (Circuit Switched Data, sometimes just called GSM Data). However, you may find transfers slower than the maximum GPRS data rate during peak hours in busy cell networks, because voice connections usually take precedence. The data transfer rate also depends on your device's multislot class, which brings us to the next section.
What Does "Class 10 (4+2, 5)" Mean?
GPRS classes refer to the slots allocated for uploading and downloading data. The class number, in this case 10, signifies the multislot class. The number 4 in (4+2, 5) refers to the maximum number of slots that can be used for downloading - the more slots used, the faster the data transfer. The second number (2) refers to uploading, and the final number (5, which may or may not be shown), refers to the maximum number of slots that can be used at any one time, both uploading and downloading.
So in this case, we could have 4 downloading and 1 uploading (4+1=5), or 3 downloading and 2 uploading (3+2=5), as a slot can only be used for uploading or downloading at one time. However, you couldn't have 2 downloading and 3 uploading, because that would exceed the maximum number of slots for upload.
Here are some common GPRS classes for Nokia phones - but it's not an exhaustive list:
GPRS Class 2 (2+1, 3)
You guessed it, 2 slots for download and 1 for upload. It's a simple class of GPRS that's found in many phones.
GPRS Class 8 (4+1)
Class 8 reserves 4 slots for downloading and 1 for uploading. This is suitable for Web browsing, and also if you read more email than you send.
GPRS Class 10 (4+1, 3+2)
This profile, which is in the example above, is better for back-and-forth use of GPRS, like instant messaging.
EGPRS (EDGE)
EGPRS (Enhanced GPRS or EDGE) uses a slightly different technology based on what's called 8PSK, or 8-Phase Shift. In practice, it makes GPRS transfers about three times faster, and makes downloading larger files like video less frustrating.
GPRS Technology Compatible with :
Nokia E90 Communicator, Nokia E70 Smartphone, Nokia E65, Nokia 61i, Nokia E61 Smartphone, Nokia E60 Smartphone, Nokia E50 Business Device, Nokia 9500 Communicator, Nokia 9300i Device, Nokia 9300 Device, Nokia 8800 Phone, Nokia 8600 Luna, Nokia 7900 Prism Phone, Nokia 7710 Widescreen Smartphone, Nokia 7610 Phone, Nokia 7500 Prism Phone, Nokia 7380 Phone, Nokia 7370 Phone, Nokia 7360 Phone, Nokia 7270 Phone, Nokia 7260 Phone, Nokia 6681 Smartphone, Nokia 6680 Smartphone, Nokia 6670 Phone, Nokia 6630 Smartphone, Nokia 6610i Phone, Nokia 6600 Phone, Nokia 6500 classic, Nokia 6500 slide, Nokia 6301, Nokia 6300 Phone, Nokia 6290 Phone, Nokia 6280 Phone, Nokia 6270 Phone, Nokia 6233 Phone, Nokia 6230i Phone, Nokia 6230 Phone, Nokia 6151 Phone, Nokia 6136 Phone, Nokia 6131 Phone, Nokia 6125 Phone, Nokia 6121 classic, Nokia 6111 Phone, Nokia 6110 Navigator, Nokia 6103 Phone, Nokia 6101, Nokia 6100 Phone, Nokia 6086 Phone, Nokia 6085 Phone, Nokia 6080 Phone, Nokia 6070 Phone, Nokia 6060 Phone, Nokia 6030 Phone, Nokia 6021 Phone, Nokia 6020 Phone, Nokia 5700 XpressMusic, Nokia 5500 Phone, Nokia 5300 XpressMusic, Nokia 5140i Phone, Nokia 5140 Phone, Nokia 5100 Phone, Nokia 5070 Phone, Nokia 3660 Phone, Nokia 3250 Phone, Nokia 3250 XpressMusic, Nokia 3230 Phone, Nokia 3220 Phone, Nokia 3120 Phone, Nokia 3110 classic, Nokia 2652 Phone, Nokia 2650 Phone, Nokia 2626 Phone, Nokia N95, Nokia N93, Nokia N92, Nokia N91, Nokia N91 8GB, Nokia N90, Nokia N80, Nokia N77, Nokia N73, Nokia N73 Music Edition, Nokia N72, Nokia N71, Nokia N70, Nokia N70 Music Edition, N-Gage™ game deck, N-Gage™ QD game deck, Nokia 8910i Phone, Nokia 8910 Phone, Nokia 8310 Phone, Nokia 7650 Imaging Phone, Nokia 7600 Phone, Nokia 7280 Phone, Nokia 7250i Phone, Nokia 7250 Phone, Nokia 7210 Phone, Nokia 7200 Phone, Nokia 6822, Nokia 6820 Messaging Device, Nokia 6810 Messaging Device, Nokia 6800 Phone, Nokia 6650 Phone, Nokia 6610 Phone, Nokia 6510 Phone, Nokia 6310i Phone, Nokia 6310 Phone, Nokia 6260 Phone, Nokia 6220 Phone, Nokia 6170 Phone, Nokia 3650 Phone, Nokia 3510i Phone, Nokia 3510 Phone, Nokia 3200 Phone, Nokia 3100 Phone.
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