The image quality of smartphones is getting better and better, but why are there more and more photography "add-on tools"?

Mobile phone manufacturers spent more than a decade integrating cameras into mobile phones. Now, they are starting to add camera components to the outside of mobile phones one by one.

If you have been paying close attention to the recent development of mobile phone imaging, you will notice that more and more "external accessories" are taking the spotlight. For example, the 200mm teleconverter of vivo XFold6, and OPPO and Honor attaching a magnetic secondary screen to their phones, enabling users to take selfies, preview, and control the rear main camera when shooting alone.

(Image source: Honor)

People buy mobile phones partly with the idea of not having to carry an additional camera. However, when they want to take serious shots, they take out lenses, screens, gimbals, wireless microphones, fill lights, and SSDs, making their mobile phones more and more professional. Surprisingly, these accessories are not just used by professional players. Teleconverters, fill lights, and wireless microphones have become essential tools for ordinary people when watching performances.

Therefore, Lei Technology believes that the next battle in mobile phone imaging will not completely leave the realm of lenses. The battlefield has expanded from the inside of the phone to the outside. Although sensors and lenses determine the upper limit of image quality, for ordinary people to shoot a "professional" video, they need to not only "enhance the internal" but also "enhance the external."

Mobile Phone Imaging is Growing External "Organs"

To be honest, the thickness and weight of mobile phones are always limited. Extreme capabilities that are rarely used in daily life are difficult to be permanently integrated into the phone. A prime example is the ultra - long - focal - length lenses that major mobile phone manufacturers are competing over. For instance, the vivo X300 Ultra retains the high - frequency 85mm equivalent focal length. When users need to shoot birds, stages, or distant subjects, they can attach a 2.35x or 4.7x Zeiss teleconverter to extend the focal length to the equivalent of 200mm or 400mm. The G2 Ultra weighs 248g. After attaching the teleconverter, it's certainly not lightweight. It represents the division of labor in mobile phone imaging: keep the commonly used capabilities in the phone and install the low - frequency but high - value optical capabilities as needed.

(Image source: vivo)

However, using such teleconverters doesn't necessarily mean that external attachments are better than the built - in periscope telephoto lenses. They add weight, and the installation accuracy and optical quality can affect the final image. Low - quality external lenses may even cause vignetting, color cast, and edge blurring. Nevertheless, mobile phone manufacturers are starting to treat extreme focal lengths as loadable optical plugins instead of insisting on permanently integrating every possibility into the limited space of the phone, which is at least worthy of recognition.

Different from "teleconversion," mobile phone imaging accessories also need some interesting and fun gadgets, such as the "selfie screen." The magnetic secondary screens of OPPO Bubble and Honor 600 series take a different approach. They hardly participate in the imaging process. Their significance lies in allowing solo creators to use the rear main camera with better image quality and still see their own expressions and movements clearly. Honor has also added four - level fill lighting to the secondary screen, while OPPO has the screen serve as a wallpaper and an "electronic sticker." For imaging accessories to enter the hands of ordinary people, besides being useful, they also need to be lightweight, good - looking, and something that people are willing to carry around every day.

(Image source: OPPO)

In the past, manufacturers were used to defining imaging capabilities with lenses and algorithms. Now, a screen that doesn't participate in imaging can also become a selling point for imaging. The reason is actually quite simple. For users shooting alone, it's difficult to make good use of a great main camera if they can't see themselves. The OPPO Bubble doesn't improve the parameters of the main camera, but it makes it easier for a person to take good selfies using the main camera. Nowadays, the right to frame and control should also be included in the scope of mobile phone imaging capabilities.

Honor has integrated fill lighting into the magnetic secondary screen. A magnetic flash fill light has appeared in OPPO's official accessories. DJI has also made a 10g OM fill light that can be directly connected to the gimbal. Although the night - scene algorithm of mobile phones can synthesize brighter static images, it's difficult to change the direction of light out of thin air or make the skin tone of a person automatically receive ideal lighting.

The significance of a small fill light doesn't lie in turning night into day. It only needs to add a small, controllable, and real light source to a face, food, or a close - range subject. It can be used right after being attached without the need for separate wiring, which often conforms better to the usage habits of mobile phones than pursuing extreme brightness.

(Image source: OPPO)

Of course, when it comes to mobile phone imaging accessories, the handheld gimbal must be mentioned.

The latest generation of DJI Osmo Mobile 8P integrates three - axis stabilization, subject tracking, remote framing, an extension rod, a tripod, and mobile phone charging into one device. It also provides shooting guidance and one - click post - processing through DJI Mimo. With the help of powerful software algorithms, the gimbal has taken on some of the responsibilities of a photographer. It can follow the subject, adjust the composition, control the camera position for solo shooters, and even remind users which shot to take next.

(Image source: DJI)

Then there's the wireless microphone, such as RØDE. Its significance lies in moving the microphone from the mobile phone a few meters away to the collar of the speaker. Although algorithms can reduce background noise, they can't eliminate the distance of sound transmission. In store visits, street interviews, and two - person Vlogs, the wireless microphone is still the best solution.

Overall, lenses, screens, lights, gimbals, microphones, and apps may seem to belong to different categories, but in fact, they are all becoming new tools to help mobile phones become more powerful and professional imaging devices. Although we have seen them in the camera field years ago, it doesn't prevent them from making mobile phone photography more convenient and providing a better experience.

Accessories are Important Because Algorithms Can't Compensate for Physical Limitations

Reports show that as of December 2025, the number of online audio - visual users in China has reached 1.099 billion, with an average daily usage time of 201 minutes. In 2025, the market size of the online audio - visual industry was close to 1.29 trillion yuan. Among the major online applications with a usage rate of over 80%, short - video is the only sub - application that has achieved growth in both user scale and usage rate.

Previously, users were satisfied with just getting the shot. Now, the same mobile phone may be required to handle tasks such as appearing on camera, conducting interviews, displaying products, recording on - site, editing, and publishing on the same day. As the image quality of the mobile phone itself approaches professional levels, the gaps in other aspects become more obvious. For example, the image is clear enough, but the subject tracking is poor; the video has a high dynamic range, but the audio is unclear; the footage is shot in Log format, but there isn't enough storage space or battery power. The bottleneck in mobile phone imaging is shifting from the upper limit of image quality to the lower limit of the workflow.

(Image source: vivo)

Distance is the first threshold that algorithms find difficult to cross. Digital zoom can't infinitely recover details from a distance, and noise reduction can't turn the voice from a few meters away into a close - up voice at the collar. Teleconverters and wireless microphones may seem unrelated, but they do similar things. They both shorten the physical distance between the mobile phone and the shooting subject, making the light or sound usable before it enters the algorithm.

Light and motion won't disappear just because of AI. Night - scene synthesis is good at handling relatively stable scenes, but moving faces, constantly changing stage lights, and steaming dishes are more likely to have motion blur and color deviation. Electronic image stabilization can offset some shaking through cropping, but it won't help users plan camera movements, continuously track people, or adjust the composition from a distance. Fill lights, gimbals, and selfie screens truly fill the gaps that occur before pixel calculation.

There's also high - specification video, especially log and RAW video. The Phone 15 Pro can directly record ProRes video at a maximum of 4K 60fps to an external storage device and provides Log encoding. Manufacturers such as Lexar and SanDisk have also started designing SSDs for direct mobile phone connection and magnetic external recording. Higher bitrates bring more post - processing space, but also larger files, higher power consumption, and more obvious overheating.

(Image source: Lexar)

The systematization of external accessories stems from the fact that mobile phones have taken on too many tasks. They act as cameras, recorders, monitors, hard drives, editing stations, and publishing terminals. As lenses push the upper limit of image quality higher and higher, any shortcoming that fails to keep up may render an entire video useless. In the view of Lei Technology (ID: leitech), the next competition in mobile phone imaging shouldn't just focus on who launches more accessories but also on whether these components can work together smoothly.

There are More and More Imaging Accessories, but What about the Ecosystem?

The vivo teleconverter, the secondary screens of OPPO and Honor, and the dedicated photography handles of various brands are reinventing a lightweight lens - mount ecosystem. After users buy dedicated phone cases, lenses, filters, and handles, they also limit their future choices to a certain extent to the same brand. This logic is somewhat similar to the camera lens - mount business, but the difference is that the appearance of mobile phones changes more quickly. A dedicated accessory may only be compatible with one generation of products, and its service life is much shorter than that of a camera lens.

Therefore, cross - generation reuse will be the biggest question mark in this business. Whether a new mobile phone can be compatible with the previous generation of accessories, whether the interfaces are willing to be open to third - parties, and whether the same device can retain its main functions across different brands and apps will all affect users' willingness to continue investing. If users have to discard the lens case, handle, and secondary screen every time they change their phones, the so - called ecosystem will be more like a set of expensive consumables, making it difficult to build long - term trust.

However, during the group interview at the vivo XFold6 press conference, vivo officials revealed to Lei Technology that they are indeed working on creating a unified standard lens - mount ecosystem for the vivo teleconverter. More new phones in the future may be added to this ecosystem, and even if the phone is obsolete, the teleconverter can still be used.

(Image source: vivo)

In reality, having more external accessories doesn't necessarily mean being more professional. After attaching large lenses, cage rigs, SSDs, power banks, cooling devices, and wireless microphones, the mobile phone loses its most important feature: portability. Gimbals need to be unfolded and stored, which may cause users to miss the perfect moment. Cheap lenses may reduce image quality. Wireless microphones and professional apps may also lack some functions on different Android models. As the built - in image stabilization, AI tracking, native audio recording, and computational photography of mobile phones continue to improve, a number of less valuable external accessories will still be phased out.

Therefore, Lei Technology believes that a different approach should be taken for mobile phone imaging accessories compared to cameras. For example, the weight should be reasonably controlled to avoid the loss of portability; they should be easy to install and compatible with more products; the stability, audio recording, storage, and editing functions should not compete for interfaces and power supply, and the hardware and software should jointly complete the process from recording to final editing, etc.

Ultimately, the mobile phone imaging ecosystem is compressing the complex processes that used to belong to photographers, sound engineers, lighting technicians, and editors into a simple, portable shooting solution for ordinary people. For peripheral device manufacturers, the one who can make these operations faster, more stable, and more natural will win the next round of competition and become the star in mobile phone imaging.

Conclusion

It's not difficult to notice that whether it's the teleconverter moving the extreme focal length outside the phone, the selfie screen moving the viewfinder outside the phone, or the gimbal and wireless microphone taking over some of the work of photographers and sound engineers, their ultimate goal is to improve the functions that the mobile phone can only achieve at a 60 - point level to an 80 - point or even 90 - point level through external accessories.

However, this may also give rise