Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: Sony Xperia C3 D2533 Black Factory Unlocked 3G 4G LTE 700 / 900 / 1800 / 2100 / 2600 International - No Warranty
Product feature: LTE 700 / 900 / 1800 / 2100 / 2600, HSDPA 850 / 900 / 1900 / 2100, 5 MP, 720p, LED flash, Android OS, v4.4.2 (KitKat), Quad-core 1.2 GHz Cortex-A7, This cell phone may not include a US warranty as some manufacturers do not honor warranties for international version phones. Please contact the seller for specific warranty information.
Product brand: Sony
Target attributes: Weight
Answer: attribute: weight
value: None
source: None