Differences Between Desay SV 187A and 187B

[BrookeLynn]

Compared to the 187B, the 187A is an older model. The 187A requires memory replacement to enable CarPlay, while the 187B has larger memory and supports CarPlay without the need for flashing. The 187B supports Apple and Baidu smartphone connectivity for functions like navigation, which the 187A does not. Key features of the 187B: 1. Multimedia Support: CMMB digital TV, true-color HD digital screen, intelligent digital operation platform, developed based on ARM architecture Windows CE intelligent operating system for more stable operation, faster speed, and enhanced functionality; advanced electronic anti-shock; supports rearview camera to assist with parking. 2. Multiple Playback Options: One-touch Bluetooth hands-free, FM/AM radio, multimedia playback, supports DVD/VCD/CD/MP4/MP3 media playback, supports remote control/full touchscreen control for DVD, digital bass and treble control.

[Lester]

Desay SV 187a and 187b are classic models of Volkswagen car audio systems, with their biggest difference lying in mobile connectivity. The 187a only supports Apple CarPlay, making it convenient for iPhone users to connect their phones for music and navigation, but Android users are left out. The 187b, however, is upgraded to support both CarPlay and Android Auto, allowing seamless screen projection whether you have an iPhone or an Android phone. In terms of processing speed, the 187b's chip is faster, providing smoother responses when launching map apps or switching songs, while the 187a occasionally gets stuck on loading screens. Additionally, the 187b has larger memory capacity, enabling more offline map storage, which is great for long trips without relying on signals. The interface design is also slightly tweaked, with the 187b's USB port offering better compatibility and reducing connection issues. If you prioritize full compatibility, the 187b is the smarter choice, especially with Android phones being so prevalent—don’t limit your experience by choosing the 187a. In daily driving, these small upgrades bring significant convenience.

[SawyerLynn]

I've tried several head unit models, used the 187a on an old Volkswagen. The navigation was decent but only worked with iPhones, then I switched to 187b and realized the significant differences. The 187b supports Android screen mirroring, much friendlier for Samsung users like me. In terms of operation, the 187b's touchscreen responds more swiftly—functions pop up instantly with a tap, unlike the occasional lag on the 187a. Music playback on the 187b delivers clearer and more stable audio quality, likely due to optimized processing circuits. The 187a received fewer software updates, leading to quickly outdated maps; the 187b gets regular OTA updates to maintain the latest features. During installation, note that the 187b's connectors fit Volkswagen's original wiring better, avoiding rework. From a driving experience perspective, the 187b integrates phones more seamlessly, especially with more responsive voice control—just say "navigate" on the highway and it activates instantly, whereas the 187a's slight delay disrupts the flow. These subtle differences become quite noticeable in daily use.

[DiDaniel]

187a does not support Android Auto and can only be used with iPhones, while 187b supports both CarPlay and is compatible with Android systems. During modifications, the 187a's map card slot is prone to issues or software lag and stuttering; the 187b has an updated design, larger memory, and faster response. It is recommended to choose 187b to avoid future limitations, especially for Android users who must use 187b. With slight interface modifications, 187b offers better versatility and simpler installation. The price difference is minimal, making the upgrade worthwhile.

[CourtneyLynn]

From an economic perspective, the 187B is slightly more expensive than the 187A but offers significantly more features. The 187A is cheaper and suitable for iOS users or those on a tight budget, but it can only connect to Apple phones. If you switch to an Android phone, you'll need to spend more money to upgrade. The 187B requires a one-time investment of an extra hundred or two, but it's worth it for Android support and improved processing speed. Considering long-term usage costs, the 187A may require frequent maintenance for the map card slot, while the 187B is more durable and reduces repair needs. In terms of cost-effectiveness, the 187A saves money in the short term but comes with limitations; the 187B is more economical and hassle-free in the long run. Choose based on your phone habits and budget—don't just go for the cheaper 187A and regret it later.