August WiFi Smart Lock Review
The August hardware WiFi Smart Lock is one of the most widely discussed retrofit smart locks on the residential market, and this review examines how it performs across security function, installation, daily usability, and the real risks that come with putting a networked device on your front door. Whether you are researching an upgrade or troubleshooting an existing unit, the information below is organized to help you make an informed decision and recognize the moments when a licensed locksmith should be part of the equation.
August WiFi Smart Lock Review Overview
The August WiFi Smart Lock (fourth-generation model, sometimes listed as the August Wi-Fi Smart Lock) is a deadbolt retrofit device, meaning it attaches to the interior side of a standard single-cylinder deadbolt and replaces only the interior thumb-turn. The exterior keyway and the mechanical deadbolt remain in place. This approach is one of the product’s defining characteristics: you keep your existing keys, and the lock operates mechanically even if power or connectivity fails.
Built-in WiFi (2.4 GHz) is handled directly by the lock itself, eliminating the separate hub that earlier August generations required. The unit communicates with the August app on iOS and Android, supports Amazon Alexa, Google Assistant, and Apple HomeKit, and provides auto-lock, auto-unlock, and access logging features. Battery life is rated at approximately three to six months depending on usage volume, and the lock runs on four AA batteries accessible from the interior cover.
Physical dimensions are substantial. The interior assembly is noticeably larger than a standard thumb-turn, which affects aesthetics on some doors and can create clearance issues on doors with tight frame molding or nearby light switches. August publishes a compatibility checker on its website, and verifying fit before purchase prevents the most common installation frustrations.
Key Factors
Installation is designed for a homeowner with basic tools. The process involves removing the existing interior escutcheon and thumb-turn, attaching the August mounting plate to the existing tailpiece, and snapping the lock body onto the plate. Most standard Schlage lock brand, Kwikset lock products, and Baldwin single-cylinder deadbolts are compatible. Mortise locks, rim cylinders, and vertical deadbolts are not. If you are uncertain which lock type your door has, a locksmith can identify it in minutes and confirm whether the August unit is mechanically appropriate for the application.
Auto-unlock uses geofencing via your phone’s GPS. When your device enters a defined radius, the lock disengages before you reach the door. In practice, auto-unlock is convenient but occasionally slow, particularly when a phone transitions between cell and WiFi networks. Users who rely on it exclusively should maintain a backup method — either a physical key or a second authorized user with app access. August’s DoorSense sensor detects whether the door is physically open or closed, which is a meaningful safety feature because it prevents auto-lock from engaging on an open door.
Access sharing is managed through the app. The owner account can create guest access with scheduled time windows, which is practical for housekeepers, contractors, or short-term rental guests. Each access event is logged with a timestamp and the name of the credential used. This audit trail is one of the more useful security features for property managers. Importantly, the log is stored in August’s cloud infrastructure, which introduces a dependency on the company’s servers remaining operational and secure.
Compatibility with smart home platforms is genuine rather than superficial. The HomeKit integration allows Siri control and automation through the Apple Home app without routing commands through August’s servers. The Alexa and Google integrations are functional for voice-triggered locking and status checks, though voice-unlocking requires a separate PIN confirmation by default — a deliberate friction point that reduces the risk of unintended unlocking.
Costs and Risks
Average: $230 · Range: $180–$280 · Travel: free in service area. That range covers the lock hardware at retail. Installation is typically a self-service task, but if the existing deadbolt requires replacement, adjustment, or if the door frame has alignment issues that prevent smooth throw, a locksmith service call is necessary. A deadbolt replacement service averages $80–$150 depending on hardware and labor in your area. Door alignment or strike plate adjustment adds to that total.
The primary mechanical risk with any retrofit smart lock is over-reliance on the smart functions at the expense of physical security fundamentals. The August WiFi Smart Lock does not upgrade the deadbolt cylinder, the strike plate, the door jamb reinforcement, or the door material itself. A door with a weak jamb or a low-grade deadbolt cylinder remains vulnerable regardless of what technology is attached to the thumb-turn side. Security assessments should treat the mechanical layer and the electronic layer as separate concerns, and deficiencies in the mechanical layer cannot be corrected by adding a smart controller.
Cybersecurity considerations are real and require honest discussion. The lock connects to your home WiFi network and communicates with cloud servers. August (owned by Spectrum Brands) has maintained a reasonable update cadence for firmware, but like any IoT device, the lock represents a network-attached endpoint. Placing it on a separate IoT VLAN, using strong WiFi passwords, and enabling two-factor authentication on your August account are practical mitigations. Users who manage access codes for multiple parties should audit active credentials periodically and remove access that is no longer needed.
Battery failure is the most common operational risk. When batteries drop below a functional threshold, the motor cannot complete the throw, and the lock may become unresponsive to app commands. August provides low-battery push notifications, and following them promptly prevents lockouts. Carrying a physical key remains the most reliable contingency. If a lockout does occur due to dead batteries, a locksmith can provide entry through the existing exterior keyway — the mechanical cylinder remains fully functional regardless of electronics status.
When to Call a Locksmith
Several scenarios that arise during August lock ownership fall outside the scope of a DIY fix. The first is a pre-installation assessment. If you are unsure whether your existing deadbolt is compatible, whether the deadbolt itself is in serviceable condition, or whether the door and frame alignment will allow smooth motor-driven throw, a locksmith can evaluate all three before you commit to the purchase. Attempting to install a smart lock on a deadbolt with a binding throw or a misaligned strike plate results in motor strain, incomplete locking, and premature hardware failure.
The second scenario is lockout recovery. If the app is unavailable due to account issues, server outages, or a lost phone, and you do not have a physical key, a locksmith provides non-destructive entry through the exterior cylinder. This is straightforward for a licensed technician and preserves the lock hardware. Attempting forced entry yourself risks door frame damage and may compromise the deadbolt so that it requires full replacement rather than simple entry.
Rekeying is a third scenario that involves a locksmith regardless of smart lock ownership. When you move into a property, following a break-in, after a roommate or contractor relationship ends, or any time key control is uncertain, the exterior cylinder should be rekeyed. The August lock does not change or eliminate the exterior keyway. A locksmith rekeys the cylinder in place — usually in under thirty minutes — without requiring a new lock purchase. If the existing cylinder is a low-security grade, a locksmith can also upgrade it to a higher-security option compatible with the August mounting plate.
Strike plate and door frame reinforcement is a fourth area where professional involvement adds measurable security value. Standard residential strike plates are often secured with short screws into the door jamb casing rather than the structural framing. A locksmith can install a reinforced strike plate with three-inch screws into the structural framing, which significantly increases resistance to kick-in forced entry. This upgrade costs relatively little and addresses the most statistically common residential forced-entry method — one that smart lock technology does nothing to prevent.
Recommended Next Steps
For anyone evaluating the August WiFi Smart Lock, a logical sequence begins with the mechanical layer before addressing the electronic layer. Confirm that your existing deadbolt is a compatible single-cylinder unit, check the door and frame alignment for smooth deadbolt throw, and assess the strike plate installation. If any of those elements are deficient, address them first. A smart lock installed on a compromised mechanical foundation provides convenience without proportionate security improvement.
If the mechanical foundation is sound, installation proceeds according to August’s documentation in most cases. Pay attention to the tailpiece adapter selection — August includes multiple adapters for different deadbolt brands, and selecting the correct one determines whether the motor drives the throw cleanly. Test auto-lock and auto-unlock in multiple connectivity conditions before depending on them. Disable auto-unlock if your phone connectivity in the approach to your home is inconsistent.
Network hygiene steps should follow hardware installation. Change your WiFi password if it has not been updated recently, place the lock on a dedicated IoT network segment if your router supports it, and enable two-factor authentication on your August account. Review the access log after the first week of use to confirm that entries are being recorded as expected and that no unexpected access events appear.
For property managers or short-term rental hosts, the access scheduling and logging features are worth the investment in time to configure correctly. Create named guest credentials for each person or stay rather than sharing a single recurring code. This makes the log interpretable and allows clean access revocation when a relationship ends. Periodically export or screenshot the access log for your records if your use case involves any liability exposure.
Finally, maintain a physical key even if you expect to use the app as your primary access method. The exterior cylinder works independently of the electronics at all times. A key stored with a trusted neighbor, in a secure lock box, or in a vehicle provides reliable backup that requires no connectivity and no battery charge.
More to explore: Geofencing, Wyze Lock Review, What Homeowners Should Know About Wyze Lock Review.
Call Low Rate Locksmith
Low Rate Locksmith provides 24/7 mobile locksmith service across the US and Canada for installation assessments, lockout recovery, rekeying, cylinder upgrades, and door reinforcement work related to the August WiFi Smart Lock and all other residential deadbolt applications. If you have questions about compatibility, need non-destructive entry after a lockout, or want a professional evaluation of your door’s mechanical security before installing a smart lock, call (833) 439-8636 at any hour. Travel is free within the service area, and a technician will give you a clear cost estimate before any work begins.