WAP over SMS-GSM carried WAP datagrams using GSM point-to-point SMS as the bearer. The Wireless Datagram Protocol (WDP) adapted WAP traffic to that bearer; SMS did not replace WAP’s session, transaction, security, or application layers.
Where SMS fit in the WAP stack
WAP was a layered protocol suite, not a synonym for SMS. A simplified path for a WAP exchange over SMS was:
WAE application → WSP → WTP → WTLS (if used) → WDP/SMS adaptation → GSM SMS (GSM 03.40) → SMS network elements
The Wireless Application Environment (WAE) handled the application and content side, including technologies such as WML and WBXML. WSP and WTP supplied higher-level session and transaction functions; WTLS could provide security. WDP sat beneath those layers and adapted datagrams to the selected bearer. The Open Mobile Alliance’s WAP-259-WDP specification describes a protocol profile for WDP operating over the SMS bearer service.
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- GSM Unlocked: Enjoy seamless connectivity with your preferred GSM carrier. Compatible with T-Mobile, Metro PCS, AT&T, Cricket, Mint Mobile and other GSM networks. SIM card not included. For network compatibility, please check with your carrier. Note: Not compatible with CDMA networks like Verizon (Visible, Spectrum Mobile, US Mobile, Total Wireless, Straight Talk Wireless)
- Boundless Views: Enjoy immersive viewing on the spacious 6.5” HD+ display. Whether you're watching videos, browsing, or gaming, every detail comes through with stunning clarity.
- Smooth Performance, All Day: Powered by an efficient octa-core processor, the G35 ensures smooth performance for your everyday tasks. Enjoy faster app launches, seamless multitasking, and reliable speed.
- Snap, Share, Repeat: The G35 features a dual rear camera setup for sharp, detailed shots, and a front-facing camera that’s perfect for selfies and video calls. Capture every moment with ease and clarity.
- Effortless Access: Keep your phone secure with A.I. Face ID technology. Instantly unlock your G35 with just a glance. It's fast, easy, and secure.
How WAP data travelled over SMS
The WDP GSM adaptation used the GSM point-to-point SMS rules referenced as GSM 03.40. A WAP datagram did not have to fit into one SMS: the WDP conformance material identifies separate long and short fragmentation information elements for sending and receiving. Those elements support splitting a datagram for transport and reassembling it at the receiving WAP implementation.
The specifications identify the adaptation and fragmentation mechanisms, but the reviewed material does not establish one universal message size, delivery time, throughput, or error rate for WAP over SMS. Those figures should not be inferred from the protocol profile alone.
Rank #2
- Please note, this device does not support E-SIM; This 4G model is compatible with all GSM networks worldwide outside of the U.S. In the US, ONLY compatible with T-Mobile and their MVNO's (Metro and Standup). It will NOT work with Verizon, Spectrum, AT&T, Total Wireless, other CDMA carriers, it is also not compatible with their MVNO (Visible, Xfinity Mobile, US Mobile, Cricket Wireless, etc).
- Compatibility with certain third-party devices and accessibility accessories, including some hearing aids, may vary depending on manufacturer support, Bluetooth protocols, software compatibility, and regional firmware limitations. For additional hearing aid compatibility information, please refer to Samsung’s official support documentation.
- 4G LTE Bands: B1/B3/B5/B7/B8/B20/B28/B38/B40/B41
- Display: Super AMOLED, 90Hz, 800 nits (HBM) | 6.7 inches, 110.2 cm2 (~86.0% screen-to-body ratio) | 1080 x 2340 pixels, 19.5:9 ratio (~385 ppi density)
- Camera: 50 MP, f/1.8, (wide), 1/2.76", 0.64µm, AF | 50 MP, f/1.8, (wide), 1/2.76", 0.64µm, AF | 2 MP, f/2.4, (macro)
Was WAP the same as SMS, or could a WAP page be sent as a text?
No. SMS was the transport bearer in this arrangement; WAP was the protocol suite using it. WAP traffic could include requests and responses for an application or content, carried as datagrams. That is different from sending a page’s readable text as an ordinary SMS. WAP content and encoding, such as WML and WBXML, belonged to the application/content side of the stack, not to SMS itself.
How SMS compared with other WAP bearer options
The WDP GSM conformance material lists several possible bearers. They were alternatives beneath WDP, not different names for WAP.
Rank #3
- Please note, this device does not support eSIM; This 4G model is compatible with all GSM networks worldwide outside of the U.S. In the US, ONLY compatible with T-Mobile and their MVNO's (Metro and Standup). It will NOT work with Verizon, Spectrum, Xfinity, AT&T, Total Wireless, or other CDMA carriers.
- Vivid 6.7” Super AMOLED Display – Enjoy a stunning Full HD+ screen with a smooth 90Hz refresh rate and 800 nits brightness for crystal-clear viewing, even in sunlight. 25W Charger Included. The included 25W Fast Charger is a generic accessory and is not a Samsung-branded charger.
- Powerful Performance – The Mediatek Helio G99 (6nm), Octa-Core, Mali-G57 MC2 GPU, 4GB RAM, and 128GB storage (expandable via microSDXC - uses shared SIM slot) ensure smooth multitasking and fast speeds.
- Capture Every Moment in Detail – The 50MP triple-camera system (wide, ultrawide, macro) and 13MP front camera deliver high-quality photos and videos with HDR, panorama, and LED flash.
- All-Day Battery & Fast Charging – A massive 5000mAh battery keeps you powered, and 25W fast charging gets you back to 100% in no time.
| Bearer | What the cited WAP material establishes | What that means for the comparison |
|---|---|---|
| SMS | Listed as the “SMS bearer service” for GSM, with GSM 03.40 referenced and long and short fragmentation information elements specified. | WDP adapted datagrams to point-to-point SMS; fragmentation support is explicitly identified. |
| USSD | Listed as a separate GSM bearer option. The WAP-over-USSD specification references GSM 03.90 for USSD stage 2 and GSM 03.38 for alphabet information. | USSD and SMS are distinct bearer services with different standards references; they should not be treated as one “WAP over GSM” mode. |
| GPRS | Listed as another bearer choice in the WDP GSM conformance material. | The listed profile establishes it as an alternative bearer, not a universal performance comparison with SMS. |
| Circuit-switched data | Listed as another bearer choice in the WDP GSM conformance material. | The listed profile establishes it as an alternative bearer, not a universal performance comparison with SMS. |
| Cell broadcast | Listed as another bearer choice in the WDP GSM conformance material. | The listed profile establishes it as an alternative bearer, not a universal performance comparison with SMS. |
The WDP material identifies these profiles but does not supply a universal numeric benchmark for latency, reliability, adoption, or throughput. A comparison beyond the documented bearer distinctions depends on the network, implementation, and use case.
When the specifications were published
| Date | Document or event | How to read the date |
|---|---|---|
| 30 April 1998 | WAP Forum archive of the WAP 1.0 specification suite. | The archive includes architecture, WDP, WTP, WTLS, WSP, WAE, WML, WBXML, and WAP-over-GSM-USSD documents. |
| 14 June 2001 | WAP-259-WDP-20010614-a. | This is the date in the retrieved WDP specification identifier. |
| 3 July 2001 | WAP Forum technical index. | The index identifies the contemporaneous WAP specification set. |
| 12 September 2003 | OMA template date printed in the PDF. | This is a document-template date, not a separate usage statistic or proof of adoption. |
What the standards do—and do not—tell us
The documents establish how WDP could use GSM SMS and identify fragmentation information elements and alternative bearer profiles. They do not provide a single authoritative statistic for how widely WAP over SMS was used, or a universal figure for its speed, latency, or error rate. The specification dates above describe documents, not market usage.
Quick Recap
Rank #4
- Unlocked and ready to use with your preferred GSM Carrier. Compatible with T-Mobile, Metro PCS, and others. Sim card not included. (Not compatible with AT&T, Cricket or with CDMA Networks like Verizon, Sprint, and Boost Mobile)
- Brilliant 5.7” high resolution Display that brings all your favorite movies and picture to life.
- Snap all your favorite photo, or better yet capture video, with 5MP Mail camera and 2MP Selfie
- Android 13 (Go edition)
- Box content: Phone, Silicone Case, Charger, Quick Guide and Sticker.
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