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|Manufacturer||SGP Technologies, SA, a wholly owned subsidiary of Silent Circle|
|Release date||30 June 2014|
|Introductory price||US$629 |
|Operating system||Silent OS|
|System on a chip||Tegra 4i|
|CPU||2 GHz Quad Core SoC|
|Memory||1 GB LPDDR3 SDRAM|
|Storage||16 GB flash|
|Display||1280x800 4.7 in (120 mm) diagonal IPS LCD|
|Camera||Rear: 8 MP with flash|
Front: 5 MP
|Connectivity||Wi-Fi: 802.11 a/b/g/n (2.4/5 GHz); GPS; Bluetooth v4.0|
|Online services||Bundled secure voice/video/text/file sharing and VPN service|
The Blackphone is a smartphone built to ensure privacy, developed by SGP Technologies, a wholly owned subsidiary of Silent Circle. Originally, SGP Technologies was a joint venture between the makers of GeeksPhone and Silent Circle. Marketing is focused upon business users, stressing that employees often conduct business using private devices and services that are not secure and that the Blackphone service readily provides users with options that ensure confidentiality when needed. Blackphone provides Internet access through VPN. The device runs a modified version of Android called SilentOS that comes with a bundle of security-minded tools. On 30 June 2014, the Blackphone began to ship advance orders.
I had to wait for the rest of the technology infrastructure to catch up to make it possible to do secure telephony. PGP was kind of a detour for me while waiting for the rest of the technology to catch up to make really good secure telephony possible.
Aaron Souppouris of The Verge stated:
The Blackphone looks like a fairly standard Android phone. It has a 4.7-inch HD (the exact resolution has yet to be announced) IPS display, a 2GHz quad-core processor, 16GB of storage, an 8-megapixel camera, LTE — pretty much everything you'd want in a smartphone, and very little you wouldn't. Produced by Silent Circle, a company with an existing portfolio of security- and encryption-related software
The Blackphone also allows insecure communications. Mike Janke, CEO and co-founder of Silent Circle, has suggested there are certain calls people want to encrypt, but "if you're ordering a pizza or calling your grandma", it's unlikely you'll feel the weight of criminals on your shoulders. "This is why Blackphone is unique — it gives the user the chance to choose the level of privacy."
Blackphone runs a custom-built Android OS called SilentOS. The operating system essentially "closes all backdoors" usually found open on major mobile operating systems. Some major features of SilentOS are anonymous search, privacy-enabled bundled apps, smart disabling of Wi-Fi except trusted hotspots, more control in app permissions, and private communication (calling, texting, video chat, browsing, file sharing, and conference calls). Geeksphone also claims the telephone will receive frequent secure updates from Blackphone directly.
- In North America (Region2): GSM: 850 / 900 / 1800 / 1900 MHz; HSPA+/WCDMA: 850 / 1700 / 1900 / 2100 MHz (42 Mbit/s); LTE FDD bands: 4/7/17 (Cat. 3 100 Mbit/s)
- Rest of world (Region1): GSM: 850 / 900 / 1800 / 1900 MHz; HSPA+/WCDMA: 850 / 900 / 1900 / 2100 MHz (42 Mbit/s); LTE FDD bands 3/7/20 (Cat. 3 100 Mbit/s)
LTE Cat. 4 (150 Mbit/s) is under development.
In early 2015, Geeksphone sold its part of SGP Technologies to Silent Circle to focus on wearables sold under the brand Geeksme. 14 engineers from Geeksphone, including Javier Agüera, remained in SGP. 
In the summer of 2015, Silent Circle announced that they would be releasing a successor to the Blackphone, the Blackphone 2, in September 2015. It has a 5.5-inches full HD screen with Gorilla glass, and a faster Qualcomm Snapdragon Octa-Core Processor. The price also has been increased to US$799.00. Blackphone 2 does not have a removable battery.
- A one-year subscription to Silent Circle’s secure voice and video calling and text messaging services, plus a one-year "Friend and Family" Silent Circle subscription that allows others to install the service on their smartphones.
- One year of SpiderOak cloud file storage and sharing, limited to 5 GB per month.
Kismet Smart Wi-Fi Manager comes pre-installed. It also includes an international power adapter kit and a headset.
Ars Technica praised that the Blackphone's Security Center in PrivatOS gives control over app permissions, such as the bundled Silent Phone and Silent Text services that anonymise and encrypt communications so no one can eavesdrop on voice, video, and text calls. They also praised the Disconnect VPN and Search that keeps web trackers from the telephone and anonymises web searches and Internet traffic. The Ars Technica reviewer did not like that the telephone’s performance is mediocre, noting that using a custom OS means no Google Play or any of the other benefits of the Google ecosystem, spotty support for sideloaded apps, and reliance on Amazon or other third-party app stores.
The telephone's original launch quantity is unknown, but was reported to have sold out shortly after the launch began. Since then, Blackphone has resumed normal sales.
In 2016, Silent Circle had significant financial problems, caused by a significant overestimate of how many phones they could sell. This led to the near bankruptcy of the company.
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