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At or near the final stages of production, the material is treated with a chain extender. Typically, chain extenders are bifunctional, i.e., they have two functional groups, which can link together two polymers. Representative classes of chain extenders are diglycidyl ethers, diols, diamines, or dianhydrides. Chain extenders are often applied ...
TPU is a block copolymer consisting of alternating sequences of hard and soft segments or domains formed by the reaction of (1) diisocyanates with short-chain diols (so-called chain extenders) and (2) diisocyanates with long-chain diols. By varying the ratio, structure and/or molecular weight of the reaction compounds, an enormous variety of ...
As a result, only phones that were purchased before or within 90 days of the effective date could continue to be unlocked by users. Phones purchased more than 90 days past the effective date would again be subject to the anti-circumvention clause of the DMCA and could not be legally unlocked without the carrier's permission. [4] [1]
Android 13 is the thirteenth major release and the 20th version of Android, the mobile operating system developed by the Open Handset Alliance led by Google. It was released to the public and the Android Open Source Project (AOSP) on August 15, 2022. [2] The first devices to ship with Android 13 were the Pixel 7 and 7 Pro.
An unlocked bootloader, showing additional available options. Bootloader unlocking is the process of disabling the bootloader security that makes secure boot possible. It can make advanced customizations possible, such as installing custom firmware. On smartphones, this can be a custom Android distribution or another mobile operating system ...
During the past eight years, schools in 41 states have spent millions of dollars on Yondr products — magnetically sealed fabric pouches that are used to lock up phones and other handheld tech ...
Unihertz is a Chinese smartphone manufacturer headquartered in Shanghai, China. [1] The company makes mobile devices running Android OS, targeted at niche audiences utilizing design features such as physical keyboards, small form factors, dual-sided screens, massive-capacity battery, projector function, laser rangefinder, cooling fan and ruggedization.
Mobile phone chargers have gone through a diverse evolution that has included cradles, plug-in cords and obscure connectors. However, devices built between 2010 and 2020 generally use micro-USB connectors, while newer devices tend to use USB-C.