the smartphone in a metal frame with a powerful battery and a fingerprint
5,5'' IPS HD+ (1440*720) aspect ratio 18:9
MTK6739, Quad-core, 1.3 GHz
SIM type and quantity
2 (Dual NanoSIM) + separate microSD slot
Operating system
Android™ 8.1 Oreo
4000 mAh (built-in)
ROM: 16 GB
View all specifications
Where to buy

Sigma mobile X-Style S5501 is the first in the X-Style range.

An available smartphone in a metal frame with a powerful battery, fingerprint scanner and cover as a present!

X-Style S5501 impresses and makes fall in love at first sight, from the first touch. A compact housing design, smooth contours, satin metal frame with glossy polished bevels around the perimeter, and a screen covered with glass with rounded edges. Such a smartphone allows nobody to stay indifferent. No superfluous details, everything is daintily and in concise way.

X-Style S5501 functionally responses modern trends.

The smartphone has an excellent efficiency provided by a quad-core MediaTek MT6739 processor with a 1.3GHz clock frequency in conjunction with IMG PowerVR GE8100 graphics accelerator. Such a tandem demonstrates an extraordinary and functionality of the smartphone, especially in the characteristics of operation photo and video cameras. For a convenience of operation with programs and downloading of necessary applications and storing files and photos, 2 GB of RAM and 16 GB of ROM can be used, which may be increased by microSD memory cards up to 128 GB. In order to you can work anywhere and anytime, we have equipped a smartphone with a powerful battery 4000 mA*h, which will allow you to forget about charging it for a very long time.

To ensure protection personal data and block access to a phone by unauthorized persons, X-Style S5501 is equipped with a fingerprint sensor that instantly unlocks the smartphone for its owner.

A bright and modern 5.5-inch X-Style S5501 display HD+ form with 1440×720 pixels resolution with aspect ratio 18:9 provides clear images and vivid vibrant realistic colors. A screen of smartphone is covered with 2.5D Asahi Glass with rounded edges, and its elongated shape makes a smartphone very convenient to use with one hand.

X-Style S5501 operates on a pure Android 8.1 Oreo OS. Pure Android and Google Mobile Services certification allow users to be sure that this system and smartphone have been prepared by us in accordance with Google’s recommendations. You will not find unauthorized software here, only original and necessary applications from Google.

Two slots for nanoSIM cards are under the back cover, support 3G and 4G LTE mobile networks. Along with SIM slots is a separate microSD slot designed to increase user memory.

A built-in Wi-Fi module operates on 2.4GHz frequency IEEE 802.11 a/b/g/n standards, and Hotspot Wi-Fi function allows you to spread the Internet to other users.

Photo and video recorder opportunities are represented by a 13MP and 0,3MP dual main camera with flash, autofocus and image stabilization, and a 5MP frontal camera is designed for selfies and video conferencing meetings.

Operating system
Android™ 8.1 Oreo
certified by Google Mobile Service
MTK6739, Quad-core, 1.3 GHz
SIM type and quantity
2 (Dual NanoSIM)
5,5'' IPS HD+ (1440*720) aspect ratio 18:9
the screen covered with 2.5D glass Asahi Glass
2G: GSM 850/900/1800/1900
3G: WCDMA 900/2100
4G: Band 1/3/7/8/20
ROM: 16 GB
Memory slot
microSD (up to 128 GB) - separated
main: 13 Mpx and 0,3 Mpx (flash, AF, stabilization)
front: 5 Mpx
Location detection technology
WiFi and WiFi Hotspot, 2.4 GHz,IEEE 802.11 a/b/g/n
• Light
• Proximity
• Accelerometer
• Fingerprint (security and touch control)
• A separate slot is provided for the memory cards
Li-Pol, 4000 mAh (built-in)
Headphone Jack
3,5 mm
Connector for charger
micro USB
146.5*70.2*10.2 mm
Housing materials
Temperature range
of storage and operation
Permitted outside temperature operating mode: 0°C to +50°C.
Storage temperature:-30°C to +65°C.
Relative humidity: 5% to 90%, non-condensing (25°C)
198 g
Housing color
In the box
Smartphone X-Style S5501, USB power adapter (1A), USB cable, wired headset, cover case, User manual (UA/EN), warranty card
12 months
Sigma mobile reserves the right to change the divice technical specifications and configuration without notice.
User manual (UA)
User manual (EN)
Presentation (UA)
Conformity certificate (UA)


Sigma mobile company guarantees a high quality and faultless functioning of their devices upon conditions of careful usage and considerations of exploitation rules.

After the expiration of device’s service term, we advise you to contact the Authorized Service Center for preventive maintenance and receiving recommendations for the further exploitation of device. In order to prevent possible misunderstandings, it is preferable to keep the documents that are attached to the device upon its sale (sale receipt or cashier’s receipt, instruction of exploitation, warranty card) during the service term. A warranty card establishes warranty liable for device to the extent, provided by the Law of Ukraine On protection of consumer’s rights.

Warranty conditions

  • A warranty provides free repair or replacement of the device during the warranty term. Warranty service is only provided in the presence of a valid warranty card and fiscal check.
  • The renewal of software is a technical maintenance of the product and is not considered as repair and thereforeis not a valid reason for a replacement or a refund;
  • The Periodic service of device (replacement of batteries, cleaning, etc.) is carried out by request for an additional fee.
  • The warranty term for main devices and accessories is set by Sigma mobile with reference to from the date of device’s sale (look at Table 1).
  • Service term is established by Sigma mobile company in reference to the date of the device’s purchase (look at Table 1).
  • Warranty service is provided exclusively at  Authorized Service Centers in Ukraine. The sheet of service centers may be changed



Warranty terms

Service term

Mobile phones series X-treme Main deviceEighteen months

Three years

Mobile phonesMain deviceTwelve months
TabletsMain deviceTwelve months
Action camerasMain deviceTwelve months
Bluetooth headsetsMain deviceTwelve months
Accessories and batteriesRechargeable batteries (including built-in types)Six months

Two years

Memory cards, cables, headsets and other accessories and parts, which don’t requare to disassemble the mobile device in order to replace.

One month

Table 1

The manufacturer shall not bear warranty obligation regarding the device in the following cases:

  • Violations of rules and conditions of exploitation, adjustment, installation of device, described in the User’s Manual and other documentation, which is transported to the consumer in the complete set with the device;
  • If mechanical damages have occured after the transfer of the device to the consumer;
  • The ingression of inappropriate items, liquids, insects, etc. inside the device during usage;
  • Device’s operation in conditions of excessively high or low temperature, surrounded by high humidity, high dust content;
  • Making schematic-technical, design or software changes, not approved by the manufacturer;
  • Repair or modification of device, performed by unauthorized persons;
  • If the damage is caused by the use of non-standard and/or non-qualified expandable materials, charging devices, spare parts, batteries, electronic media, software products that were not supplied or recommended by the manufacturer;
  • If the damage (defects) is caused by the action of computer viruses or similar programs;
  • If the damage (defects) is caused by non-compliance with standards or technical regulations of the power, cable, telecommunication networks, radio signal power, including features of the relief and other similar external factors, usage of the device on the edge or outside of a network action zone, connection to inappropriate or defective external devices;
  • If the defect occurred due to natural wearing down during the exploitation of the device. In this case, natural wearing down is understood as the consequences of product’s operation, which caused the deterioration of technical status and appearance due to long-term using of this device;
  • If the damage of LCD pixels of screens does not exceed 0.0005 percent of the total quantity of pixels on the screen (according to the ISO 9241-303)
  • The occurrence of force majeure (natural phenomena, fire, lightning, etc.).


The manufacturer shall not carry warranty obligation:

Under no circumstances are the manufacturer or its authorized organizations for unusual, incidental, direct or indirect damage (or losses), including, but not limited to, lost profits, loss or inability to use information or data, expenses of recovering information or data, damages caused by interruptions in commercial, manufacturing or other activity, arising in connection with the usage or inability to use a device.

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