1. Which exact Samsung phone is this?

This is the Samsung Galaxy A9 (2018), model SM-A920F/DS, with 6GB RAM, 128GB storage, Dual SIM and Lemonade Blue finish.

2. Is Lemonade Blue an official Samsung color?

Yes. Samsung officially offered Lemonade Blue, Caviar Black and Bubblegum Pink.

3. Is 6GB RAM + 128GB storage official?

Yes. Samsung offered a 6GB+128GB version and, in some markets, an 8GB+128GB version.

4. What does SM-A920F/DS mean?

SM-A920F identifies the international Galaxy A9 (2018) platform, while /DS denotes Dual SIM. Samsung still maintains support pages for SM-A920F/DS.

5. Is this a 5G phone?

No. The Galaxy A9 (2018) supports 2G, 3G and 4G LTE, not 5G.

6. Is it factory Dual SIM?

Yes. Samsung specifies Dual SIM with two Nano-SIMs.

7. Does it support eSIM?

No eSIM support is documented for SM-A920F/DS. Samsung specifies physical Nano-SIM slots.

8. Does it support a memory card?

Yes. It supports microSD expansion up to 512GB.

9. Is the microSD slot shared with SIM 2?

No. This is a major advantage: Samsung specifies SIM 1 + SIM 2 + microSD, meaning all three can be used simultaneously.

10. How much user-accessible internal storage did Samsung specify?

On Samsung’s German 128GB model, about 108.9GB was available before user data, depending on preinstalled software and region.

Snapdragon 660 performance

11. Which processor powers the Galaxy A9 (2018)?

Qualcomm Snapdragon 660. Samsung’s launch documentation explicitly identifies the Snapdragon 660.

12. What manufacturing process does Snapdragon 660 use?

14nm FinFET.

13. How many CPU cores does it have?

Eight Qualcomm Kryo 260 CPU cores.

14. What is the CPU configuration?

4 performance cores up to 2.2GHz + 4 efficiency cores up to 1.8GHz. Samsung also publishes the 2.2GHz + 1.8GHz octa-core configuration for the A9.

15. Is the CPU 64-bit?

Yes. Snapdragon 660 uses a 64-bit Kryo 260 CPU.

16. Which GPU does it use?

Qualcomm Adreno 512.

17. What DSP does Snapdragon 660 contain?

Qualcomm Hexagon 680 DSP with Hexagon Vector Extensions.

18. Which image processor does the chipset use?

Qualcomm Spectra 160 ISP.

19. Which modem is integrated into Snapdragon 660?

The platform contains the Snapdragon X12 LTE modem.

20. Does the chipset support hardware-accelerated AI?

Qualcomm describes an AI Engine using the CPU, Adreno GPU and Hexagon DSP for on-device workloads.

Display

21. How large is the display?

6.3 inches measured as a full rectangle.

22. What panel technology does it use?

Super AMOLED.

23. What is the resolution?

2220 × 1080 FHD+.

24. Does Samsung call it an Infinity Display?

Yes. Samsung marketed it as a 6.3-inch Full HD+ Super AMOLED Infinity Display.

25. How many colors does Samsung specify?

Approximately 16 million colors.

26. Is this a 90Hz or 120Hz display?

No. This predates high-refresh Galaxy A-series panels; Samsung does not advertise 90Hz or 120Hz for the A9 (2018).

27. Does it support Always On Display?

Yes. Samsung specifically marketed Always On Display for notifications, time, calendar and other information.

28. Is the display curved like a Galaxy S-series Edge display?

No. Samsung’s “curved glass” wording refers mainly to the ergonomic rear design, not an Edge-style curved AMOLED panel.

29. Does Samsung publish an official screen-to-body ratio?

The first-party specification pages used here do not publish a percentage, so I would avoid putting an unsourced ratio into your listing.

30. Should you claim a specific Gorilla Glass generation?

Samsung’s product page describes the glass construction but the official specification used here does not identify a specific Gorilla Glass generation. I would omit the generation unless you have exact Samsung documentation.

Quad rear camera system

31. How many rear cameras does the Galaxy A9 (2018) have?

Four. Samsung launched it as the world’s first rear-quad-camera smartphone.

32. What are the four cameras?

24MP main + 10MP telephoto + 8MP ultrawide + 5MP depth.

33. What is the main camera resolution?

24MP. Your top MyWorldPhone rear-camera metafield is therefore correct as the primary-camera resolution.

34. What is the main-camera aperture?

f/1.7.

35. Does the 24MP main camera autofocus?

Yes. Samsung specifies AF.

36. Does the main camera have OIS?

No. Samsung explicitly lists optical image stabilization: No for the main rear camera.

37. What is the telephoto-camera resolution?

10MP.

38. What is the telephoto aperture?

f/2.4.

39. What optical zoom does it provide?

2× optical zoom.

40. Does the telephoto camera autofocus?

Yes. Samsung identifies the 10MP telephoto as an AF camera.

Ultrawide & depth cameras

41. What is the ultrawide resolution?

8MP.

42. What is the ultrawide aperture?

f/2.4.

43. What is the ultrawide field of view?

120°.

44. What is the fourth camera?

A 5MP depth camera.

45. What is the depth-camera aperture?

f/2.2.

46. What does the depth camera do?

It provides depth information for Live Focus / background-blur effects rather than acting as a normal independent focal-length camera.

47. Is the rear system triple-camera?

No. Any description calling it a triple-camera system is incorrect.

48. Is your current “triple camera module” ALT text wrong?

Yes. Your live Lemonade Blue gallery currently contains ALT text saying triple camera module, while Samsung officially specifies four rear cameras.

49. Is “World’s First Quad Camera” correct?

Yes, when referring to Samsung’s original claim of the world’s first smartphone with four rear cameras.

50. Does it have Samsung Scene Optimizer?

Yes. Samsung promoted Scene Optimizer as part of the Galaxy A9 camera system.

Front camera & photography

51. What is the front-camera resolution?

24MP. Your top MyWorldPhone front-camera field is correct.

52. What is the selfie-camera aperture?

f/2.0.

53. Does the selfie camera autofocus?

No. Samsung lists front-camera autofocus: No.

54. Does the selfie camera have OIS?

No.

55. Does the rear camera have an LED flash?

Yes.

56. Does the selfie camera have a hardware flash?

Samsung lists front flash: No.

57. Does it support Live Focus?

Yes. The depth camera is designed to support Samsung’s depth/bokeh functionality.

58. Does it have a dedicated macro camera?

No.

59. Does it have a periscope camera?

No. It uses a conventional 10MP 2× telephoto.

60. Is 24MP the total rear-camera resolution?

No. 24MP is the main camera. The full system is 24MP + 10MP + 8MP + 5MP.

Video

61. What is the maximum rear-video resolution?

UHD 4K 3840 × 2160 at 30fps.

62. Does it support 4K60?

No. Samsung specifies 4K30.

63. Does it support 8K recording?

No.

64. Does Samsung advertise optical stabilization for video?

No OIS hardware is listed for the main camera.

65. Can it play 4K video?

Samsung specifies UHD 4K playback at 30fps.

66. Does it support H.265/HEVC at the chipset level?

Yes. Snapdragon 660 supports HEVC and 4K30 video processing.

67. Does it support H.264?

Yes.

68. Does the front camera record 4K?

Samsung’s primary product sheet only advertises 4K for the rear recording system, so I would not claim 4K selfie recording.

69. Is this mainly a still-photography-focused camera system?

Yes. Samsung’s original marketing emphasized the flexibility of four focal/depth functions more than advanced high-frame-rate video.

70. Should the page emphasize the quad-camera design?

Yes. It remains the phone’s defining product feature and is historically accurate.

Storage & SIM

71. How much RAM does this exact SKU have?

6GB.

72. How much built-in storage?

128GB.

73. What is the maximum microSD capacity?

512GB.

74. Can customers use two SIMs and a microSD simultaneously?

Yes. This is a dedicated three-slot arrangement.

75. What SIM size does it use?

Nano-SIM (4FF).

76. Is it Dual SIM Dual Standby?

It is a Dual-SIM model; Samsung explains that one selected SIM handles mobile data at a time.

77. Is eSIM available?

No eSIM functionality is specified for this device.

78. Is there a 256GB version in Samsung’s original core specification?

Samsung’s launch specification focused on 128GB internal storage, with RAM varying by market.

79. Is 8GB RAM possible?

Yes, Samsung offered 8GB/128GB versions in some markets.

80. Should this 6GB page list every regional RAM variant?

I would not. For this exact SKU, simply display 6GB RAM + 128GB storage.

Network & wireless connectivity

81. Which network generations does SM-A920F/DS support?

GSM 2G, WCDMA 3G and FDD/TDD LTE 4G.

82. Which major LTE bands does Samsung list?

Samsung lists FDD LTE B1/2/3/4/5/7/8/12/13/17/20/26/28/66 and TDD LTE B38/40/41 for the cited international version.

83. Does it support LTE bands useful in North America?

It includes several relevant bands such as B2, B4, B5, B12, B13, B17 and B66, but that does not guarantee activation on a particular U.S. carrier.

84. Does “factory unlocked” guarantee carrier activation?

No. Activation can depend on supported bands, IMEI eligibility, VoLTE/IMS provisioning and current carrier policy.

85. What Wi-Fi does it support?

802.11 a/b/g/n/ac, on 2.4GHz and 5GHz, with VHT80 MIMO.

86. Does it support Wi-Fi 6?

No. Its highest manufacturer-listed generation is 802.11ac / Wi-Fi 5.

87. What Bluetooth version does it use?

Bluetooth 5.0, including Low Energy support up to the specified rate.

88. Does it support NFC?

Yes.

89. Does it support ANT+?

Yes.

90. Which positioning systems are supported?

Samsung lists GPS, GLONASS, BeiDou and Galileo.

Battery, ports, audio & software

91. What is the battery capacity?

3800mAh typical. Samsung also gives a 3720mAh rated/minimum figure, which explains why some older sources mention roughly 3700mAh.

92. Is the battery removable?

No. Samsung specifies a non-removable battery.

93. Does it support fast charging?

Yes. Samsung officially lists fast charging via USB Type-C.

94. Does Samsung’s main A9 specification publish a charging wattage?

The official product documentation cited here says Fast Charging but does not give a watt figure. I would therefore avoid promising a specific wattage in the main product description.

95. Does it support wireless charging?

Samsung’s official Galaxy A9 (2018) specifications do not list wireless charging. The wireless charging pad should therefore be removed from this product page.

96. What USB port does it use?

USB Type-C, USB 2.0.

97. Does it have a 3.5mm headphone jack?

Yes.

98. Does it support Dolby Atmos?

Yes. Samsung’s launch specification lists Dolby Atmos and 24-bit/192kHz audio enhancement.

99. What operating system did it launch with?

Android 8.0 Oreo. Samsung’s official support site later published manuals for Android Pie and Android 10, so software on an individual unit may be newer than the launch OS.

100. What security features are included?

Samsung lists rear fingerprint recognition, face recognition and Samsung Knox security functionality.

For this international model, I would use modern compatibility language rather than calling it merely a “GSM phone.” The A9 supports multiple 2G/3G/LTE technologies, but actual carrier service depends on the exact network, IMEI eligibility, supported LTE bands, VoLTE/IMS provisioning and carrier policy.