Due to roll out in the end of June 2017 is another Android One* phone by Sharp and Softbank for use on the latter's MVNO network Y!Mobile, codenamed X1.
On the outside, the Android One X1 is an almost exact replica of the Aquos R flagship, down to even the colour range, the only difference being the printed brand names. The casing is about the same size: W74 × H152 × D8.9 mm vs. W74 × H153 × D8.7 mm on the Aquos R. Both weigh approx. 169 grams.
The difference is in what you find underneath the surface: a 5.3-inch display, still IGZO, but now FHD (1080 x 1920 px). This phone's main selling point is battery stamina – thanks to the idling stop IGZO tech and the 3900 mAh battery (2530 mAh on the S1) capacity, the phone should be able to last more than 4 days on a single charge.
Like the Aquos R, the X1 comes with a fingerprint sensor centred below the display, which is its main "novelty" in comparison with the previous Android One S1. The processor is a newer version, too: now the Snapdragon 435 (MSM8940), whereas the S1 had the Snapdragon 430 (MSM8937), but both have four 1.4 GHz cores and four 1.1 GHz cores.
The amount of RAM has also been increased – up to 3 GB now – and so has the amount of ROM – up to 32 GB (from 16 GB). The onboard storage can be expanded using microSDXC cards of up to 256 GB.
Onboard the Android One X1 we find a better camera, as well: now a 16.4-megapixel main shooter with hybrid auto-focus (PDAF + CAF), but the sub-camera remains the same, 8 MP. Don't expect this to be as good as the flagship's GR-certified, OIS, EIS, f/1.9 sensor, though – this one doesn't have image stabilisation.
The X1 is waterproof (IPX5/8) and dustproof (IP6X). It now comes with a USB Type-C connector.
The X1, unlike the previous Android One devices, now has a Felica/NFC digital wallet option.
Like in all phones of the Android One series, this will be receiving all Android OS upgrades for at least 18 months, and will also be getting monthly security updates from Google. Originally launched with Android 7.1, on 20 December 2017, the X1 received the upgrade to Android 8.0.
The Android One X1 supports a broad range of radio frequencies:
[4G] 900 MHz・1.5 GHz・1.7 GHz・2.1 GHz・2.5 GHz
[3G] 900 MHz・2.1 GHz
[GSM] 850 MHz・900 MHz・1800 MHz・1900 MHz.
On the Y!Mobile FDD LTE networks, the X1 should be able to reach downlink speeds of up to 187.5 Mbps, and up to 37.5 Mbps uplink. Thanks to this, VoLTE (HD+) / VoLTE / HD Voice (3G) are also supported.
Further connectivity optios include Wi-Fi a/b/g/n/ac, Bluetooth 4.2, GPS, and OneSeg TV, but no infrared.
* Android One is a line of devices targeted at new users of smartphones, mainly from emerging countries markets, where the design and development of the device is handled by Google, and the manufacturing is managed by an OEM such as Sharp. In Japan, marketing is done by the carrier (SoftBank's Y!Mobile MNVO).
Date added/updated: 21 December 2017 – 10:16
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