Pros When you dial a number you can change the color on the screen along with the background, changable sounds when pressing the key pad, good sounding
Cons The color, the fact the out side is color, but you can't change it, or have external photo caller id, camera is slow and always blurry, battery life
Summary I had this phone for a month. From day 2 this phone was aweful! It died over night fully charged. Replaced the battery with a new one and still had the problem in the next day! Got it replaced with another one and that one had even more problems..that one and many others got returned! The color is ugly too. You can' t customize anything on this phone. The outer screen dissapointed me. The phone always had a low signal, even on Wifi. This phone is not worth your money. I washed it by accident one day and I was happy to replace it.
Pros Wi-Fi calling, durable, call quality, call volume, small flip design, 2G only so no 3G to 2G switch over problems on calls, good enough battery for the purpose, some free browsing on T-Zones, simple interface, airplane mode, block call numbers.
Cons Occasionally the battery does not fully charge on home charger and have to recharge it sooner than expected, glossy slick top surface of phone can crack (but still usable), antennas on bottom of phone- reduce signals if you cover them.
Summary With a good broadband connection, this phone and T-Mobile UMA work great! I can make excellent quality calls in my basement with UMA where no cellular carrier works. I can make UMA calls in the center of a big hotel where GSM, 3GMS, or CDMA don't work well. I've used it for 2 years, and other than having to switch to a better cable internet provider once due to call quality decline, I have been very happy with the phone and T-Mobile UMA service. I use a basic Linksys CM100 cable modem, a T-Mobile LInksys Wireless Router, and have regular 10/1 cable internet service.
This phone does switch over from GSM to Wi-Fi (takes about a minute) and vice versa (happens quickly), that is if you have at least one or two bars of GSM signal available during the transition process. If you lose of have no bars during the transition, then the call will likely drop.
Airplane mode on this phone allows you to turn off cellular but leave wi-fi on for UMA or WAP browser. Thus, if you have a strong cellular signal but don't want to use GSM and instead use wi-fi for a call, then turn on airplane mode. This feature could also be used to prevent roaming overseas so as to make/receive calls or texts ( USA numbers only) for free (hotspot add-on, grandfathered) or just counting against your minutes (all other plans).
This phone can be used as a USB cellular modem for a Windows 7 64 bit (HP AMD Turion II) computer with Samsung PC Studio 3 version 3.2.3 IE2. Just download the Windows Vista version from Samsung and then do check for updates. In the system tray it will show a red X through the connection even though it is still connected to GSM and working. GPRS and Edge data are really only useful for mobile formatted websites and email due to limited speeds. It costs $10/month for this unlimited? data service. If you don't want to pay the $10/month, you still get some basic free data services through T-Zones like Yahoo news, Accuweather, Yahoo email, CNBC, ABC news, CBS news, etc. The WAP browser is NetFront v 3.4. and is not compatible with video content or .pdf attachments.
The outer screen CAN BE ILLUMINATED without opening the phone by pressing the volume key for several seconds! You can take your own picture and view it on the outerr screen by pressing the camera button with the screen closed. Unfortunately, the outer screen is somewhat difficult to see in bright light. The camera really requires good lighting due to no flash. The picture quality is only fair, compared to any digital camera. Video quality is weak.
Call quality over GSM or Wi-Fi is very good. This phone will make and receive decent quality calls on only 1 bar GSM if you are stationary. Call volume is very acceptable and the speaker phone is loud enough for quiet setting (not construction sites).
The antennas (GSM and Wi-FI) are on the bottom of the phone, so it is best not to cover the bottom portion of the handset with the palm of your hand and instead use your fingertips when holding the phone. This technique will prevent the signal from going down a bar.
I own two of these phones, one purchased under contract from T-Mobile and one new unlocked T-Mobile USA version bought on an auction site as a backup. They are identical, except that the auction phone does not have the 911 sticker on the back, did not come with a full manual, and does not have an OEM Samsung battery.
This aftermarket battery has not lasted very long and I would not recommend it. Beware that if you use the T339 as a home replacement phone and run it 24 hours a day with wi-fi on and connected to the wall charger at night, the battery will probably not last as long due to heat buildup when the phone is on and charging. I think this may also cause the charger to stop charging as a safety measure. Unfortunately, you then find out the next day that the charging did not go to full. This only happens occasionally. Maybe a cooling pad/grate at night would help dissipate heat? Another option would be to turn the phone off and charge it. Samsung batteries are only about $10 and are readily available.
I don't use the bluetooth and instead use a USB cable for connecting to a computer. I don't use hands-free bluetooth for calling and instead use the included hands-free cable. It is a little short in length, but it works. I don't text, but for occasional web address or contact entry, the flat keypad is fine.
Overall, a good phone and rated excellent due to T-Mobile UMA!
Pros The music quality and the display are good.
Cons After less than a year, I'm shopping for a new phone because this one is literally falling apart. The hinge plastic has a chunk that has broken off and now the top has a crack in it. I am not an abusive phone user, this one is just very cheaply made.
Summary Doesn't sound good with bluetooth headset, falls apart. A total waste...
Pros Phone looks nice, compact and dual colored for two phone households. I use charcoal and wife uses red.
Cons Battery keeps dying. Replaced 2X and still heats up and dies. T-Mobile says it is operator error. Wife's phone never a problem. Secondary - for a flip phone, it doesn't flip.
Summary I will continue to fight w/T-Mobile to get phone that works. Btw: I have never had prolems with Nokia or Motorola phone and I have had cells aince the early 90s when they were brick-phones.
Pros Wi-Fi Hotspot works well. Bright screen.
Cons Terrible battery life: 12 to 24 hours. Not easy to flip open. The speakerphone quality is poor and not loud enough. Not very customizable. Not easy to flip open. Have to reach in with fingernail.
Summary I have 3 of these. One works fine, but the other two started blowing through a fully charged battery in 12 to 24 hours even without any use. When they run out of battery, they turn off. Sometime, we am not aware that they have already run out of juice and turned off and cannot place or receive calls. I bought them privately, so T-Mobile will not replace them (even though they are T-Mobile phones!). Sent them back to Samsung, but they could not find anything wrong with them and sent them back with the same problem! They are unwilling to replace the phones even though they are under warranty. I bought new batteries to see if that was the problem, but they do the same thing with the new batteries. I have bought a few phones privately over the years to get around contract extensions, but I will never buy another Samsung phone after this experience. The phone is defective and Samsung's customer service is horrible.